/*
 * jQuery 1.2.6 - New Wave Javascript
 *
 * Copyright (c) 2008 John Resig (jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * Date: 2008-05-24 14:22:17 -0400 (Sat, 24 May 2008)
 * Rev: 5685
 */
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var Drupal = Drupal || { 'settings': {}, 'behaviors': {}, 'themes': {}, 'locale': {} };

/**
 * Set the variable that indicates if JavaScript behaviors should be applied
 */
Drupal.jsEnabled = document.getElementsByTagName && document.createElement && document.createTextNode && document.documentElement && document.getElementById;

/**
 * Attach all registered behaviors to a page element.
 *
 * Behaviors are event-triggered actions that attach to page elements, enhancing
 * default non-Javascript UIs. Behaviors are registered in the Drupal.behaviors
 * object as follows:
 * @code
 *    Drupal.behaviors.behaviorName = function () {
 *      ...
 *    };
 * @endcode
 *
 * Drupal.attachBehaviors is added below to the jQuery ready event and so
 * runs on initial page load. Developers implementing AHAH/AJAX in their
 * solutions should also call this function after new page content has been
 * loaded, feeding in an element to be processed, in order to attach all
 * behaviors to the new content.
 *
 * Behaviors should use a class in the form behaviorName-processed to ensure
 * the behavior is attached only once to a given element. (Doing so enables
 * the reprocessing of given elements, which may be needed on occasion despite
 * the ability to limit behavior attachment to a particular element.)
 *
 * @param context
 *   An element to attach behaviors to. If none is given, the document element
 *   is used.
 */
Drupal.attachBehaviors = function(context) {
  context = context || document;
  if (Drupal.jsEnabled) {
    // Execute all of them.
    jQuery.each(Drupal.behaviors, function() {
      this(context);
    });
  }
};

/**
 * Encode special characters in a plain-text string for display as HTML.
 */
Drupal.checkPlain = function(str) {
  str = String(str);
  var replace = { '&': '&amp;', '"': '&quot;', '<': '&lt;', '>': '&gt;' };
  for (var character in replace) {
    var regex = new RegExp(character, 'g');
    str = str.replace(regex, replace[character]);
  }
  return str;
};

/**
 * Translate strings to the page language or a given language.
 *
 * See the documentation of the server-side t() function for further details.
 *
 * @param str
 *   A string containing the English string to translate.
 * @param args
 *   An object of replacements pairs to make after translation. Incidences
 *   of any key in this array are replaced with the corresponding value.
 *   Based on the first character of the key, the value is escaped and/or themed:
 *    - !variable: inserted as is
 *    - @variable: escape plain text to HTML (Drupal.checkPlain)
 *    - %variable: escape text and theme as a placeholder for user-submitted
 *      content (checkPlain + Drupal.theme('placeholder'))
 * @return
 *   The translated string.
 */
Drupal.t = function(str, args) {
  // Fetch the localized version of the string.
  if (Drupal.locale.strings && Drupal.locale.strings[str]) {
    str = Drupal.locale.strings[str];
  }

  if (args) {
    // Transform arguments before inserting them
    for (var key in args) {
      switch (key.charAt(0)) {
        // Escaped only
        case '@':
          args[key] = Drupal.checkPlain(args[key]);
        break;
        // Pass-through
        case '!':
          break;
        // Escaped and placeholder
        case '%':
        default:
          args[key] = Drupal.theme('placeholder', args[key]);
          break;
      }
      str = str.replace(key, args[key]);
    }
  }
  return str;
};

/**
 * Format a string containing a count of items.
 *
 * This function ensures that the string is pluralized correctly. Since Drupal.t() is
 * called by this function, make sure not to pass already-localized strings to it.
 *
 * See the documentation of the server-side format_plural() function for further details.
 *
 * @param count
 *   The item count to display.
 * @param singular
 *   The string for the singular case. Please make sure it is clear this is
 *   singular, to ease translation (e.g. use "1 new comment" instead of "1 new").
 *   Do not use @count in the singular string.
 * @param plural
 *   The string for the plural case. Please make sure it is clear this is plural,
 *   to ease translation. Use @count in place of the item count, as in "@count
 *   new comments".
 * @param args
 *   An object of replacements pairs to make after translation. Incidences
 *   of any key in this array are replaced with the corresponding value.
 *   Based on the first character of the key, the value is escaped and/or themed:
 *    - !variable: inserted as is
 *    - @variable: escape plain text to HTML (Drupal.checkPlain)
 *    - %variable: escape text and theme as a placeholder for user-submitted
 *      content (checkPlain + Drupal.theme('placeholder'))
 *   Note that you do not need to include @count in this array.
 *   This replacement is done automatically for the plural case.
 * @return
 *   A translated string.
 */
Drupal.formatPlural = function(count, singular, plural, args) {
  var args = args || {};
  args['@count'] = count;
  // Determine the index of the plural form.
  var index = Drupal.locale.pluralFormula ? Drupal.locale.pluralFormula(args['@count']) : ((args['@count'] == 1) ? 0 : 1);

  if (index == 0) {
    return Drupal.t(singular, args);
  }
  else if (index == 1) {
    return Drupal.t(plural, args);
  }
  else {
    args['@count['+ index +']'] = args['@count'];
    delete args['@count'];
    return Drupal.t(plural.replace('@count', '@count['+ index +']'));
  }
};

/**
 * Generate the themed representation of a Drupal object.
 *
 * All requests for themed output must go through this function. It examines
 * the request and routes it to the appropriate theme function. If the current
 * theme does not provide an override function, the generic theme function is
 * called.
 *
 * For example, to retrieve the HTML that is output by theme_placeholder(text),
 * call Drupal.theme('placeholder', text).
 *
 * @param func
 *   The name of the theme function to call.
 * @param ...
 *   Additional arguments to pass along to the theme function.
 * @return
 *   Any data the theme function returns. This could be a plain HTML string,
 *   but also a complex object.
 */
Drupal.theme = function(func) {
  for (var i = 1, args = []; i < arguments.length; i++) {
    args.push(arguments[i]);
  }

  return (Drupal.theme[func] || Drupal.theme.prototype[func]).apply(this, args);
};

/**
 * Parse a JSON response.
 *
 * The result is either the JSON object, or an object with 'status' 0 and 'data' an error message.
 */
Drupal.parseJson = function (data) {
  if ((data.substring(0, 1) != '{') && (data.substring(0, 1) != '[')) {
    return { status: 0, data: data.length ? data : Drupal.t('Unspecified error') };
  }
  return eval('(' + data + ');');
};

/**
 * Freeze the current body height (as minimum height). Used to prevent
 * unnecessary upwards scrolling when doing DOM manipulations.
 */
Drupal.freezeHeight = function () {
  Drupal.unfreezeHeight();
  var div = document.createElement('div');
  $(div).css({
    position: 'absolute',
    top: '0px',
    left: '0px',
    width: '1px',
    height: $('body').css('height')
  }).attr('id', 'freeze-height');
  $('body').append(div);
};

/**
 * Unfreeze the body height
 */
Drupal.unfreezeHeight = function () {
  $('#freeze-height').remove();
};

/**
 * Wrapper around encodeURIComponent() which avoids Apache quirks (equivalent of
 * drupal_urlencode() in PHP). This function should only be used on paths, not
 * on query string arguments.
 */
Drupal.encodeURIComponent = function (item, uri) {
  uri = uri || location.href;
  item = encodeURIComponent(item).replace(/%2F/g, '/');
  return (uri.indexOf('?q=') != -1) ? item : item.replace(/%26/g, '%2526').replace(/%23/g, '%2523').replace(/\/\//g, '/%252F');
};

/**
 * Get the text selection in a textarea.
 */
Drupal.getSelection = function (element) {
  if (typeof(element.selectionStart) != 'number' && document.selection) {
    // The current selection
    var range1 = document.selection.createRange();
    var range2 = range1.duplicate();
    // Select all text.
    range2.moveToElementText(element);
    // Now move 'dummy' end point to end point of original range.
    range2.setEndPoint('EndToEnd', range1);
    // Now we can calculate start and end points.
    var start = range2.text.length - range1.text.length;
    var end = start + range1.text.length;
    return { 'start': start, 'end': end };
  }
  return { 'start': element.selectionStart, 'end': element.selectionEnd };
};

/**
 * Build an error message from ahah response.
 */
Drupal.ahahError = function(xmlhttp, uri) {
  if (xmlhttp.status == 200) {
    if (jQuery.trim($(xmlhttp.responseText).text())) {
      var message = Drupal.t("An error occurred. \n@uri\n@text", {'@uri': uri, '@text': xmlhttp.responseText });
    }
    else {
      var message = Drupal.t("An error occurred. \n@uri\n(no information available).", {'@uri': uri, '@text': xmlhttp.responseText });
    }
  }
  else {
    var message = Drupal.t("An HTTP error @status occurred. \n@uri", {'@uri': uri, '@status': xmlhttp.status });
  }
  return message;
}

// Global Killswitch on the <html> element
if (Drupal.jsEnabled) {
  // Global Killswitch on the <html> element
  $(document.documentElement).addClass('js');
  // 'js enabled' cookie
  document.cookie = 'has_js=1; path=/';
  // Attach all behaviors.
  $(document).ready(function() {
    Drupal.attachBehaviors(this);
  });
}

/**
 * The default themes.
 */
Drupal.theme.prototype = {

  /**
   * Formats text for emphasized display in a placeholder inside a sentence.
   *
   * @param str
   *   The text to format (plain-text).
   * @return
   *   The formatted text (html).
   */
  placeholder: function(str) {
    return '<em>' + Drupal.checkPlain(str) + '</em>';
  }
};
;
/* $Id: lightbox.js,v 1.5.2.6.2.136 2010/09/24 08:39:40 snpower Exp $ */

/**
 * jQuery Lightbox
 * @author
 *   Stella Power, <http://drupal.org/user/66894>
 *
 * Based on Lightbox v2.03.3 by Lokesh Dhakar
 * <http://www.huddletogether.com/projects/lightbox2/>
 * Also partially based on the jQuery Lightbox by Warren Krewenki
 *   <http://warren.mesozen.com>
 *
 * Permission has been granted to Mark Ashmead & other Drupal Lightbox2 module
 * maintainers to distribute this file via Drupal.org
 * Under GPL license.
 *
 * Slideshow, iframe and video functionality added by Stella Power.
 */

var Lightbox = {
  auto_modal : false,
  overlayOpacity : 0.8, // Controls transparency of shadow overlay.
  overlayColor : '000', // Controls colour of shadow overlay.
  disableCloseClick : true,
  // Controls the order of the lightbox resizing animation sequence.
  resizeSequence: 0, // 0: simultaneous, 1: width then height, 2: height then width.
  resizeSpeed: 'normal', // Controls the speed of the lightbox resizing animation.
  fadeInSpeed: 'normal', // Controls the speed of the image appearance.
  slideDownSpeed: 'slow', // Controls the speed of the image details appearance.
  minWidth: 240,
  borderSize : 10,
  boxColor : 'fff',
  fontColor : '000',
  topPosition : '',
  infoHeight: 20,
  alternative_layout : false,
  imageArray : [],
  imageNum : null,
  total : 0,
  activeImage : null,
  inprogress : false,
  disableResize : false,
  disableZoom : false,
  isZoomedIn : false,
  rtl : false,
  loopItems : false,
  keysClose : ['c', 'x', 27],
  keysPrevious : ['p', 37],
  keysNext : ['n', 39],
  keysZoom : ['z'],
  keysPlayPause : [32],

  // Slideshow options.
  slideInterval : 5000, // In milliseconds.
  showPlayPause : true,
  autoStart : true,
  autoExit : true,
  pauseOnNextClick : false, // True to pause the slideshow when the "Next" button is clicked.
  pauseOnPrevClick : true, // True to pause the slideshow when the "Prev" button is clicked.
  slideIdArray : [],
  slideIdCount : 0,
  isSlideshow : false,
  isPaused : false,
  loopSlides : false,

  // Iframe options.
  isLightframe : false,
  iframe_width : 600,
  iframe_height : 400,
  iframe_border : 1,

  // Video and modal options.
  enableVideo : false,
  flvPlayer : '/flvplayer.swf',
  flvFlashvars : '',
  isModal : false,
  isVideo : false,
  videoId : false,
  modalWidth : 400,
  modalHeight : 400,
  modalHTML : null,


  // initialize()
  // Constructor runs on completion of the DOM loading.
  // The function inserts html at the bottom of the page which is used
  // to display the shadow overlay and the image container.
  initialize: function() {

    var s = Drupal.settings.lightbox2;
    Lightbox.overlayOpacity = s.overlay_opacity;
    Lightbox.overlayColor = s.overlay_color;
    Lightbox.disableCloseClick = s.disable_close_click;
    Lightbox.resizeSequence = s.resize_sequence;
    Lightbox.resizeSpeed = s.resize_speed;
    Lightbox.fadeInSpeed = s.fade_in_speed;
    Lightbox.slideDownSpeed = s.slide_down_speed;
    Lightbox.borderSize = s.border_size;
    Lightbox.boxColor = s.box_color;
    Lightbox.fontColor = s.font_color;
    Lightbox.topPosition = s.top_position;
    Lightbox.rtl = s.rtl;
    Lightbox.loopItems = s.loop_items;
    Lightbox.keysClose = s.keys_close.split(" ");
    Lightbox.keysPrevious = s.keys_previous.split(" ");
    Lightbox.keysNext = s.keys_next.split(" ");
    Lightbox.keysZoom = s.keys_zoom.split(" ");
    Lightbox.keysPlayPause = s.keys_play_pause.split(" ");
    Lightbox.disableResize = s.disable_resize;
    Lightbox.disableZoom = s.disable_zoom;
    Lightbox.slideInterval = s.slideshow_interval;
    Lightbox.showPlayPause = s.show_play_pause;
    Lightbox.showCaption = s.show_caption;
    Lightbox.autoStart = s.slideshow_automatic_start;
    Lightbox.autoExit = s.slideshow_automatic_exit;
    Lightbox.pauseOnNextClick = s.pause_on_next_click;
    Lightbox.pauseOnPrevClick = s.pause_on_previous_click;
    Lightbox.loopSlides = s.loop_slides;
    Lightbox.alternative_layout = s.use_alt_layout;
    Lightbox.iframe_width = s.iframe_width;
    Lightbox.iframe_height = s.iframe_height;
    Lightbox.iframe_border = s.iframe_border;
    Lightbox.enableVideo = s.enable_video;
    if (s.enable_video) {
      Lightbox.flvPlayer = s.flvPlayer;
      Lightbox.flvFlashvars = s.flvFlashvars;
    }

    // Make the lightbox divs.
    var layout_class = (s.use_alt_layout ? 'lightbox2-alt-layout' : 'lightbox2-orig-layout');
    var output = '<div id="lightbox2-overlay" style="display: none;"></div>\
      <div id="lightbox" style="display: none;" class="' + layout_class + '">\
        <div id="outerImageContainer"></div>\
        <div id="imageDataContainer" class="clearfix">\
          <div id="imageData"></div>\
        </div>\
      </div>';
    var loading = '<div id="loading"><a href="#" id="loadingLink"></a></div>';
    var modal = '<div id="modalContainer" style="display: none;"></div>';
    var frame = '<div id="frameContainer" style="display: none;"></div>';
    var imageContainer = '<div id="imageContainer" style="display: none;"></div>';
    var details = '<div id="imageDetails"></div>';
    var bottomNav = '<div id="bottomNav"></div>';
    var image = '<img id="lightboxImage" alt="" />';
    var hoverNav = '<div id="hoverNav"><a id="prevLink" href="#"></a><a id="nextLink" href="#"></a></div>';
    var frameNav = '<div id="frameHoverNav"><a id="framePrevLink" href="#"></a><a id="frameNextLink" href="#"></a></div>';
    var hoverNav = '<div id="hoverNav"><a id="prevLink" title="' + Drupal.t('Previous') + '" href="#"></a><a id="nextLink" title="' + Drupal.t('Next') + '" href="#"></a></div>';
    var frameNav = '<div id="frameHoverNav"><a id="framePrevLink" title="' + Drupal.t('Previous') + '" href="#"></a><a id="frameNextLink" title="' + Drupal.t('Next') + '" href="#"></a></div>';
    var caption = '<span id="caption"></span>';
    var numberDisplay = '<span id="numberDisplay"></span>';
    var close = '<a id="bottomNavClose" title="' + Drupal.t('Close') + '" href="#"></a>';
    var zoom = '<a id="bottomNavZoom" href="#"></a>';
    var zoomOut = '<a id="bottomNavZoomOut" href="#"></a>';
    var pause = '<a id="lightshowPause" title="' + Drupal.t('Pause Slideshow') + '" href="#" style="display: none;"></a>';
    var play = '<a id="lightshowPlay" title="' + Drupal.t('Play Slideshow') + '" href="#" style="display: none;"></a>';

    $("body").append(output);
    $('#outerImageContainer').append(modal + frame + imageContainer + loading);
    if (!s.use_alt_layout) {
      $('#imageContainer').append(image + hoverNav);
      $('#imageData').append(details + bottomNav);
      $('#imageDetails').append(caption + numberDisplay);
      $('#bottomNav').append(frameNav + close + zoom + zoomOut + pause + play);
    }
    else {
      $('#outerImageContainer').append(bottomNav);
      $('#imageContainer').append(image);
      $('#bottomNav').append(close + zoom + zoomOut);
      $('#imageData').append(hoverNav + details);
      $('#imageDetails').append(caption + numberDisplay + pause + play);
    }

    // Setup onclick handlers.
    if (Lightbox.disableCloseClick) {
      $('#lightbox2-overlay').click(function() { Lightbox.end(); return false; } ).hide();
    }
    $('#loadingLink, #bottomNavClose').click(function() { Lightbox.end('forceClose'); return false; } );
    $('#prevLink, #framePrevLink').click(function() { Lightbox.changeData(Lightbox.activeImage - 1); return false; } );
    $('#nextLink, #frameNextLink').click(function() { Lightbox.changeData(Lightbox.activeImage + 1); return false; } );
    $('#bottomNavZoom').click(function() { Lightbox.changeData(Lightbox.activeImage, true); return false; } );
    $('#bottomNavZoomOut').click(function() { Lightbox.changeData(Lightbox.activeImage, false); return false; } );
    $('#lightshowPause').click(function() { Lightbox.togglePlayPause("lightshowPause", "lightshowPlay"); return false; } );
    $('#lightshowPlay').click(function() { Lightbox.togglePlayPause("lightshowPlay", "lightshowPause"); return false; } );

    // Fix positioning.
    $('#prevLink, #nextLink, #framePrevLink, #frameNextLink').css({ 'paddingTop': Lightbox.borderSize + 'px'});
    $('#imageContainer, #frameContainer, #modalContainer').css({ 'padding': Lightbox.borderSize + 'px'});
    $('#outerImageContainer, #imageDataContainer, #bottomNavClose').css({'backgroundColor': '#' + Lightbox.boxColor, 'color': '#'+Lightbox.fontColor});
    if (Lightbox.alternative_layout) {
      $('#bottomNavZoom, #bottomNavZoomOut').css({'bottom': Lightbox.borderSize + 'px', 'right': Lightbox.borderSize + 'px'});
    }
    else if (Lightbox.rtl == 1 && $.browser.msie) {
      $('#bottomNavZoom, #bottomNavZoomOut').css({'left': '0px'});
    }

    // Force navigation links to always be displayed
    if (s.force_show_nav) {
      $('#prevLink, #nextLink').addClass("force_show_nav");
    }

  },

  // initList()
  // Loops through anchor tags looking for 'lightbox', 'lightshow' and
  // 'lightframe', etc, references and applies onclick events to appropriate
  // links. You can rerun after dynamically adding images w/ajax.
  initList : function(context) {

    if (context == undefined || context == null) {
      context = document;
    }

    // Attach lightbox to any links with rel 'lightbox', 'lightshow' or
    // 'lightframe', etc.
    $("a[rel^='lightbox']:not(.lightbox-processed), area[rel^='lightbox']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      if (Lightbox.disableCloseClick) {
        $('#lightbox').unbind('click');
        $('#lightbox').click(function() { Lightbox.end('forceClose'); } );
      }
      Lightbox.start(this, false, false, false, false);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
    $("a[rel^='lightshow']:not(.lightbox-processed), area[rel^='lightshow']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      if (Lightbox.disableCloseClick) {
        $('#lightbox').unbind('click');
        $('#lightbox').click(function() { Lightbox.end('forceClose'); } );
      }
      Lightbox.start(this, true, false, false, false);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
    $("a[rel^='lightframe']:not(.lightbox-processed), area[rel^='lightframe']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      if (Lightbox.disableCloseClick) {
        $('#lightbox').unbind('click');
        $('#lightbox').click(function() { Lightbox.end('forceClose'); } );
      }
      Lightbox.start(this, false, true, false, false);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
    if (Lightbox.enableVideo) {
      $("a[rel^='lightvideo']:not(.lightbox-processed), area[rel^='lightvideo']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
        if (Lightbox.disableCloseClick) {
          $('#lightbox').unbind('click');
          $('#lightbox').click(function() { Lightbox.end('forceClose'); } );
        }
        Lightbox.start(this, false, false, true, false);
        if (e.preventDefault) { e.preventDefault(); }
        return false;
      });
    }
    $("a[rel^='lightmodal']:not(.lightbox-processed), area[rel^='lightmodal']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      $('#lightbox').unbind('click');
      // Add classes from the link to the lightbox div - don't include lightbox-processed
      $('#lightbox').addClass($(this).attr('class'));
      $('#lightbox').removeClass('lightbox-processed');
      Lightbox.start(this, false, false, false, true);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
    $("#lightboxAutoModal:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      Lightbox.auto_modal = true;
      $('#lightbox').unbind('click');
      Lightbox.start(this, false, false, false, true);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
  },

  // start()
  // Display overlay and lightbox. If image is part of a set, add siblings to
  // imageArray.
  start: function(imageLink, slideshow, lightframe, lightvideo, lightmodal) {

    Lightbox.isPaused = !Lightbox.autoStart;

    // Replaces hideSelectBoxes() and hideFlash() calls in original lightbox2.
    Lightbox.toggleSelectsFlash('hide');

    // Stretch overlay to fill page and fade in.
    var arrayPageSize = Lightbox.getPageSize();
    $("#lightbox2-overlay").hide().css({
      'width': '100%',
      'zIndex': '10090',
      'height': arrayPageSize[1] + 'px',
      'backgroundColor' : '#' + Lightbox.overlayColor
    });
    // Detect OS X FF2 opacity + flash issue.
    if (lightvideo && this.detectMacFF2()) {
      $("#lightbox2-overlay").removeClass("overlay_default");
      $("#lightbox2-overlay").addClass("overlay_macff2");
      $("#lightbox2-overlay").css({'opacity' : null});
    }
    else {
      $("#lightbox2-overlay").removeClass("overlay_macff2");
      $("#lightbox2-overlay").addClass("overlay_default");
      $("#lightbox2-overlay").css({'opacity' : Lightbox.overlayOpacity});
    }
    $("#lightbox2-overlay").fadeIn(Lightbox.fadeInSpeed);


    Lightbox.isSlideshow = slideshow;
    Lightbox.isLightframe = lightframe;
    Lightbox.isVideo = lightvideo;
    Lightbox.isModal = lightmodal;
    Lightbox.imageArray = [];
    Lightbox.imageNum = 0;

    var anchors = $(imageLink.tagName);
    var anchor = null;
    var rel_parts = Lightbox.parseRel(imageLink);
    var rel = rel_parts["rel"];
    var rel_group = rel_parts["group"];
    var title = (rel_parts["title"] ? rel_parts["title"] : imageLink.title);
    var rel_style = null;
    var i = 0;

    if (rel_parts["flashvars"]) {
      Lightbox.flvFlashvars = Lightbox.flvFlashvars + '&' + rel_parts["flashvars"];
    }

    // Set the title for image alternative text.
    var alt = imageLink.title;
    if (!alt) {
      var img = $(imageLink).find("img");
      if (img && $(img).attr("alt")) {
        alt = $(img).attr("alt");
      }
      else {
        alt = title;
      }
    }

    if ($(imageLink).attr('id') == 'lightboxAutoModal') {
      rel_style = rel_parts["style"];
      Lightbox.imageArray.push(['#lightboxAutoModal > *', title, alt, rel_style, 1]);
    }
    else {
      // Handle lightbox images with no grouping.
      if ((rel == 'lightbox' || rel == 'lightshow') && !rel_group) {
        Lightbox.imageArray.push([imageLink.href, title, alt]);
      }

      // Handle other items with no grouping.
      else if (!rel_group) {
        rel_style = rel_parts["style"];
        Lightbox.imageArray.push([imageLink.href, title, alt, rel_style]);
      }

      // Handle grouped items.
      else {

        // Loop through anchors and add them to imageArray.
        for (i = 0; i < anchors.length; i++) {
          anchor = anchors[i];
          if (anchor.href && typeof(anchor.href) == "string" && $(anchor).attr('rel')) {
            var rel_data = Lightbox.parseRel(anchor);
            var anchor_title = (rel_data["title"] ? rel_data["title"] : anchor.title);
            img_alt = anchor.title;
            if (!img_alt) {
              var anchor_img = $(anchor).find("img");
              if (anchor_img && $(anchor_img).attr("alt")) {
                img_alt = $(anchor_img).attr("alt");
              }
              else {
                img_alt = title;
              }
            }
            if (rel_data["rel"] == rel) {
              if (rel_data["group"] == rel_group) {
                if (Lightbox.isLightframe || Lightbox.isModal || Lightbox.isVideo) {
                  rel_style = rel_data["style"];
                }
                Lightbox.imageArray.push([anchor.href, anchor_title, img_alt, rel_style]);
              }
            }
          }
        }

        // Remove duplicates.
        for (i = 0; i < Lightbox.imageArray.length; i++) {
          for (j = Lightbox.imageArray.length-1; j > i; j--) {
            if (Lightbox.imageArray[i][0] == Lightbox.imageArray[j][0]) {
              Lightbox.imageArray.splice(j,1);
            }
          }
        }
        while (Lightbox.imageArray[Lightbox.imageNum][0] != imageLink.href) {
          Lightbox.imageNum++;
        }
      }
    }

    if (Lightbox.isSlideshow && Lightbox.showPlayPause && Lightbox.isPaused) {
      $('#lightshowPlay').show();
      $('#lightshowPause').hide();
    }

    // Calculate top and left offset for the lightbox.
    var arrayPageScroll = Lightbox.getPageScroll();
    var lightboxTop = arrayPageScroll[1] + (Lightbox.topPosition == '' ? (arrayPageSize[3] / 10) : Lightbox.topPosition) * 1;
    var lightboxLeft = arrayPageScroll[0];
    $('#frameContainer, #modalContainer, #lightboxImage').hide();
    $('#hoverNav, #prevLink, #nextLink, #frameHoverNav, #framePrevLink, #frameNextLink').hide();
    $('#imageDataContainer, #numberDisplay, #bottomNavZoom, #bottomNavZoomOut').hide();
    $('#outerImageContainer').css({'width': '250px', 'height': '250px'});
    $('#lightbox').css({
      'zIndex': '10500',
      'top': lightboxTop + 'px',
      'left': lightboxLeft + 'px'
    }).show();

    Lightbox.total = Lightbox.imageArray.length;
    Lightbox.changeData(Lightbox.imageNum);
  },

  // changeData()
  // Hide most elements and preload image in preparation for resizing image
  // container.
  changeData: function(imageNum, zoomIn) {

    if (Lightbox.inprogress === false) {
      if (Lightbox.total > 1 && ((Lightbox.isSlideshow && Lightbox.loopSlides) || (!Lightbox.isSlideshow && Lightbox.loopItems))) {
        if (imageNum >= Lightbox.total) imageNum = 0;
        if (imageNum < 0) imageNum = Lightbox.total - 1;
      }

      if (Lightbox.isSlideshow) {
        for (var i = 0; i < Lightbox.slideIdCount; i++) {
          window.clearTimeout(Lightbox.slideIdArray[i]);
        }
      }
      Lightbox.inprogress = true;
      Lightbox.activeImage = imageNum;

      if (Lightbox.disableResize && !Lightbox.isSlideshow) {
        zoomIn = true;
      }
      Lightbox.isZoomedIn = zoomIn;


      // Hide elements during transition.
      $('#loading').css({'zIndex': '10500'}).show();
      if (!Lightbox.alternative_layout) {
        $('#imageContainer').hide();
      }
      $('#frameContainer, #modalContainer, #lightboxImage').hide();
      $('#hoverNav, #prevLink, #nextLink, #frameHoverNav, #framePrevLink, #frameNextLink').hide();
      $('#imageDataContainer, #numberDisplay, #bottomNavZoom, #bottomNavZoomOut').hide();

      // Preload image content, but not iframe pages.
      if (!Lightbox.isLightframe && !Lightbox.isVideo && !Lightbox.isModal) {
        $("#lightbox #imageDataContainer").removeClass('lightbox2-alt-layout-data');
        imgPreloader = new Image();
        imgPreloader.onerror = function() { Lightbox.imgNodeLoadingError(this); };

        imgPreloader.onload = function() {
          var photo = document.getElementById('lightboxImage');
          photo.src = Lightbox.imageArray[Lightbox.activeImage][0];
          photo.alt = Lightbox.imageArray[Lightbox.activeImage][2];

          var imageWidth = imgPreloader.width;
          var imageHeight = imgPreloader.height;

          // Resize code.
          var arrayPageSize = Lightbox.getPageSize();
          var targ = { w:arrayPageSize[2] - (Lightbox.borderSize * 2), h:arrayPageSize[3] - (Lightbox.borderSize * 6) - (Lightbox.infoHeight * 4) - (arrayPageSize[3] / 10) };
          var orig = { w:imgPreloader.width, h:imgPreloader.height };

          // Image is very large, so show a smaller version of the larger image
          // with zoom button.
          if (zoomIn !== true) {
            var ratio = 1.0; // Shrink image with the same aspect.
            $('#bottomNavZoomOut, #bottomNavZoom').hide();
            if ((orig.w >= targ.w || orig.h >= targ.h) && orig.h && orig.w) {
              ratio = ((targ.w / orig.w) < (targ.h / orig.h)) ? targ.w / orig.w : targ.h / orig.h;
              if (!Lightbox.disableZoom && !Lightbox.isSlideshow) {
                $('#bottomNavZoom').css({'zIndex': '10500'}).show();
              }
            }

            imageWidth  = Math.floor(orig.w * ratio);
            imageHeight = Math.floor(orig.h * ratio);
          }

          else {
            $('#bottomNavZoom').hide();
            // Only display zoom out button if the image is zoomed in already.
            if ((orig.w >= targ.w || orig.h >= targ.h) && orig.h && orig.w) {
              // Only display zoom out button if not a slideshow and if the
              // buttons aren't disabled.
              if (!Lightbox.disableResize && Lightbox.isSlideshow === false && !Lightbox.disableZoom) {
                $('#bottomNavZoomOut').css({'zIndex': '10500'}).show();
              }
            }
          }

          photo.style.width = (imageWidth) + 'px';
          photo.style.height = (imageHeight) + 'px';
          Lightbox.resizeContainer(imageWidth, imageHeight);

          // Clear onLoad, IE behaves irratically with animated gifs otherwise.
          imgPreloader.onload = function() {};
        };

        imgPreloader.src = Lightbox.imageArray[Lightbox.activeImage][0];
        imgPreloader.alt = Lightbox.imageArray[Lightbox.activeImage][2];
      }

      // Set up frame size, etc.
      else if (Lightbox.isLightframe) {
        $("#lightbox #imageDataContainer").addClass('lightbox2-alt-layout-data');
        var src = Lightbox.imageArray[Lightbox.activeImage][0];
        $('#frameContainer').html('<iframe id="lightboxFrame" style="display: none;" src="'+src+'"></iframe>');

        // Enable swf support in Gecko browsers.
        if ($.browser.mozilla && src.indexOf('.swf') != -1) {
          setTimeout(function () {
            document.getElementById("lightboxFrame").src = Lightbox.imageArray[Lightbox.activeImage][0];
          }, 1000);
        }

        if (!Lightbox.iframe_border) {
          $('#lightboxFrame').css({'border': 'none'});
          $('#lightboxFrame').attr('frameborder', '0');
        }
        var iframe = document.getElementById('lightboxFrame');
        var iframeStyles = Lightbox.imageArray[Lightbox.activeImage][3];
        iframe = Lightbox.setStyles(iframe, iframeStyles);
        Lightbox.resizeContainer(parseInt(iframe.width, 10), parseInt(iframe.height, 10));
      }
      else if (Lightbox.isVideo || Lightbox.isModal) {
        $("#lightbox #imageDataContainer").addClass('lightbox2-alt-layout-data');
        var container = document.getElementById('modalContainer');
        var modalStyles = Lightbox.imageArray[Lightbox.activeImage][3];
        container = Lightbox.setStyles(container, modalStyles);
        if (Lightbox.isVideo) {
          Lightbox.modalHeight =  parseInt(container.height, 10) - 10;
          Lightbox.modalWidth =  parseInt(container.width, 10) - 10;
          Lightvideo.startVideo(Lightbox.imageArray[Lightbox.activeImage][0]);
        }
        Lightbox.resizeContainer(parseInt(container.width, 10), parseInt(container.height, 10));
      }
    }
  },

  // imgNodeLoadingError()
  imgNodeLoadingError: function(image) {
    var s = Drupal.settings.lightbox2;
    var original_image = Lightbox.imageArray[Lightbox.activeImage][0];
    if (s.display_image_size !== "") {
      original_image = original_image.replace(new RegExp("."+s.display_image_size), "");
    }
    Lightbox.imageArray[Lightbox.activeImage][0] = original_image;
    image.onerror = function() { Lightbox.imgLoadingError(image); };
    image.src = original_image;
  },

  // imgLoadingError()
  imgLoadingError: function(image) {
    var s = Drupal.settings.lightbox2;
    Lightbox.imageArray[Lightbox.activeImage][0] = s.default_image;
    image.src = s.default_image;
  },

  // resizeContainer()
  resizeContainer: function(imgWidth, imgHeight) {

    imgWidth = (imgWidth < Lightbox.minWidth ? Lightbox.minWidth : imgWidth);

    this.widthCurrent = $('#outerImageContainer').width();
    this.heightCurrent = $('#outerImageContainer').height();

    var widthNew = (imgWidth  + (Lightbox.borderSize * 2));
    var heightNew = (imgHeight  + (Lightbox.borderSize * 2));

    // Scalars based on change from old to new.
    this.xScale = ( widthNew / this.widthCurrent) * 100;
    this.yScale = ( heightNew / this.heightCurrent) * 100;

    // Calculate size difference between new and old image, and resize if
    // necessary.
    wDiff = this.widthCurrent - widthNew;
    hDiff = this.heightCurrent - heightNew;

    $('#modalContainer').css({'width': imgWidth, 'height': imgHeight});
    // Detect animation sequence.
    if (Lightbox.resizeSequence) {
      var animate1 = {width: widthNew};
      var animate2 = {height: heightNew};
      if (Lightbox.resizeSequence == 2) {
        animate1 = {height: heightNew};
        animate2 = {width: widthNew};
      }
      $('#outerImageContainer').animate(animate1, Lightbox.resizeSpeed).animate(animate2, Lightbox.resizeSpeed, 'linear', function() { Lightbox.showData(); });
    }
    // Simultaneous.
    else {
      $('#outerImageContainer').animate({'width': widthNew, 'height': heightNew}, Lightbox.resizeSpeed, 'linear', function() { Lightbox.showData(); });
    }

    // If new and old image are same size and no scaling transition is necessary
    // do a quick pause to prevent image flicker.
    if ((hDiff === 0) && (wDiff === 0)) {
      if ($.browser.msie) {
        Lightbox.pause(250);
      }
      else {
        Lightbox.pause(100);
      }
    }

    var s = Drupal.settings.lightbox2;
    if (!s.use_alt_layout) {
      $('#prevLink, #nextLink').css({'height': imgHeight + 'px'});
    }
    $('#imageDataContainer').css({'width': widthNew + 'px'});
  },

  // showData()
  // Display image and begin preloading neighbors.
  showData: function() {
    $('#loading').hide();

    if (Lightbox.isLightframe || Lightbox.isVideo || Lightbox.isModal) {
      Lightbox.updateDetails();
      if (Lightbox.isLightframe) {
        $('#frameContainer').show();
        if ($.browser.safari || Lightbox.fadeInSpeed === 0) {
          $('#lightboxFrame').css({'zIndex': '10500'}).show();
        }
        else {
          $('#lightboxFrame').css({'zIndex': '10500'}).fadeIn(Lightbox.fadeInSpeed);
        }
      }
      else {
        if (Lightbox.isVideo) {
          $("#modalContainer").html(Lightbox.modalHTML).click(function(){return false;}).css('zIndex', '10500').show();
        }
        else {
          var src = unescape(Lightbox.imageArray[Lightbox.activeImage][0]);
          if (Lightbox.imageArray[Lightbox.activeImage][4]) {
            $(src).appendTo("#modalContainer");
            $('#modalContainer').css({'zIndex': '10500'}).show();
          }
          else {
            // Use a callback to show the new image, otherwise you get flicker.
            $("#modalContainer").hide().load(src, function () {$('#modalContainer').css({'zIndex': '10500'}).show();});
          }
          $('#modalContainer').unbind('click');
        }
        // This might be needed in the Lightframe section above.
        //$('#modalContainer').css({'zIndex': '10500'}).show();
      }
    }

    // Handle display of image content.
    else {
      $('#imageContainer').show();
      if ($.browser.safari || Lightbox.fadeInSpeed === 0) {
        $('#lightboxImage').css({'zIndex': '10500'}).show();
      }
      else {
        $('#lightboxImage').css({'zIndex': '10500'}).fadeIn(Lightbox.fadeInSpeed);
      }
      Lightbox.updateDetails();
      this.preloadNeighborImages();
    }
    Lightbox.inprogress = false;

    // Slideshow specific stuff.
    if (Lightbox.isSlideshow) {
      if (!Lightbox.loopSlides && Lightbox.activeImage == (Lightbox.total - 1)) {
        if (Lightbox.autoExit) {
          Lightbox.slideIdArray[Lightbox.slideIdCount++] = setTimeout(function () {Lightbox.end('slideshow');}, Lightbox.slideInterval);
        }
      }
      else {
        if (!Lightbox.isPaused && Lightbox.total > 1) {
          Lightbox.slideIdArray[Lightbox.slideIdCount++] = setTimeout(function () {Lightbox.changeData(Lightbox.activeImage + 1);}, Lightbox.slideInterval);
        }
      }
      if (Lightbox.showPlayPause && Lightbox.total > 1 && !Lightbox.isPaused) {
        $('#lightshowPause').show();
        $('#lightshowPlay').hide();
      }
      else if (Lightbox.showPlayPause && Lightbox.total > 1) {
        $('#lightshowPause').hide();
        $('#lightshowPlay').show();
      }
    }

    // Adjust the page overlay size.
    var arrayPageSize = Lightbox.getPageSize();
    var arrayPageScroll = Lightbox.getPageScroll();
    var pageHeight = arrayPageSize[1];
    if (Lightbox.isZoomedIn && arrayPageSize[1] > arrayPageSize[3]) {
      var lightboxTop = (Lightbox.topPosition == '' ? (arrayPageSize[3] / 10) : Lightbox.topPosition) * 1;
      pageHeight = pageHeight + arrayPageScroll[1] + lightboxTop;
    }
    $('#lightbox2-overlay').css({'height': pageHeight + 'px', 'width': arrayPageSize[0] + 'px'});

    // Gecko browsers (e.g. Firefox, SeaMonkey, etc) don't handle pdfs as
    // expected.
    if ($.browser.mozilla) {
      if (Lightbox.imageArray[Lightbox.activeImage][0].indexOf(".pdf") != -1) {
        setTimeout(function () {
          document.getElementById("lightboxFrame").src = Lightbox.imageArray[Lightbox.activeImage][0];
        }, 1000);
      }
    }
  },

  // updateDetails()
  // Display caption, image number, and bottom nav.
  updateDetails: function() {

    $("#imageDataContainer").hide();

    var s = Drupal.settings.lightbox2;

    if (s.show_caption) {
      var caption = Lightbox.filterXSS(Lightbox.imageArray[Lightbox.activeImage][1]);
      if (!caption) caption = '';
      $('#caption').html(caption).css({'zIndex': '10500'}).show();
    }

    // If image is part of set display 'Image x of x'.
    var numberDisplay = null;
    if (s.image_count && Lightbox.total > 1) {
      var currentImage = Lightbox.activeImage + 1;
      if (!Lightbox.isLightframe && !Lightbox.isModal && !Lightbox.isVideo) {
        numberDisplay = s.image_count.replace(/\!current/, currentImage).replace(/\!total/, Lightbox.total);
      }
      else if (Lightbox.isVideo) {
        numberDisplay = s.video_count.replace(/\!current/, currentImage).replace(/\!total/, Lightbox.total);
      }
      else {
        numberDisplay = s.page_count.replace(/\!current/, currentImage).replace(/\!total/, Lightbox.total);
      }
      $('#numberDisplay').html(numberDisplay).css({'zIndex': '10500'}).show();
    }
    else {
      $('#numberDisplay').hide();
    }

    $("#imageDataContainer").hide().slideDown(Lightbox.slideDownSpeed, function() {
      $("#bottomNav").show();
    });
    if (Lightbox.rtl == 1) {
      $("#bottomNav").css({'float': 'left'});
    }
    Lightbox.updateNav();
  },

  // updateNav()
  // Display appropriate previous and next hover navigation.
  updateNav: function() {

    $('#hoverNav').css({'zIndex': '10500'}).show();
    var prevLink = '#prevLink';
    var nextLink = '#nextLink';

    // Slideshow is separated as we need to show play / pause button.
    if (Lightbox.isSlideshow) {
      if ((Lightbox.total > 1 && Lightbox.loopSlides) || Lightbox.activeImage !== 0) {
        $(prevLink).css({'zIndex': '10500'}).show().click(function() {
          if (Lightbox.pauseOnPrevClick) {
            Lightbox.togglePlayPause("lightshowPause", "lightshowPlay");
          }
          Lightbox.changeData(Lightbox.activeImage - 1); return false;
        });
      }
      else {
        $(prevLink).hide();
      }

      // If not last image in set, display next image button.
      if ((Lightbox.total > 1 && Lightbox.loopSlides) || Lightbox.activeImage != (Lightbox.total - 1)) {
        $(nextLink).css({'zIndex': '10500'}).show().click(function() {
          if (Lightbox.pauseOnNextClick) {
            Lightbox.togglePlayPause("lightshowPause", "lightshowPlay");
          }
          Lightbox.changeData(Lightbox.activeImage + 1); return false;
        });
      }
      // Safari browsers need to have hide() called again.
      else {
        $(nextLink).hide();
      }
    }

    // All other types of content.
    else {

      if ((Lightbox.isLightframe || Lightbox.isModal || Lightbox.isVideo) && !Lightbox.alternative_layout) {
        $('#frameHoverNav').css({'zIndex': '10500'}).show();
        $('#hoverNav').css({'zIndex': '10500'}).hide();
        prevLink = '#framePrevLink';
        nextLink = '#frameNextLink';
      }

      // If not first image in set, display prev image button.
      if ((Lightbox.total > 1 && Lightbox.loopItems) || Lightbox.activeImage !== 0) {
        // Unbind any other click handlers, otherwise this adds a new click handler
        // each time the arrow is clicked.
        $(prevLink).css({'zIndex': '10500'}).show().unbind().click(function() {
          Lightbox.changeData(Lightbox.activeImage - 1); return false;
        });
      }
      // Safari browsers need to have hide() called again.
      else {
        $(prevLink).hide();
      }

      // If not last image in set, display next image button.
      if ((Lightbox.total > 1 && Lightbox.loopItems) || Lightbox.activeImage != (Lightbox.total - 1)) {
        // Unbind any other click handlers, otherwise this adds a new click handler
        // each time the arrow is clicked.
        $(nextLink).css({'zIndex': '10500'}).show().unbind().click(function() {
          Lightbox.changeData(Lightbox.activeImage + 1); return false;
        });
      }
      // Safari browsers need to have hide() called again.
      else {
        $(nextLink).hide();
      }
    }

    // Don't enable keyboard shortcuts so forms will work.
    if (!Lightbox.isModal) {
      this.enableKeyboardNav();
    }
  },


  // enableKeyboardNav()
  enableKeyboardNav: function() {
    $(document).bind("keydown", this.keyboardAction);
  },

  // disableKeyboardNav()
  disableKeyboardNav: function() {
    $(document).unbind("keydown", this.keyboardAction);
  },

  // keyboardAction()
  keyboardAction: function(e) {
    if (e === null) { // IE.
      keycode = event.keyCode;
      escapeKey = 27;
    }
    else { // Mozilla.
      keycode = e.keyCode;
      escapeKey = e.DOM_VK_ESCAPE;
    }

    key = String.fromCharCode(keycode).toLowerCase();

    // Close lightbox.
    if (Lightbox.checkKey(Lightbox.keysClose, key, keycode)) {
      Lightbox.end('forceClose');
    }
    // Display previous image (p, <-).
    else if (Lightbox.checkKey(Lightbox.keysPrevious, key, keycode)) {
      if ((Lightbox.total > 1 && ((Lightbox.isSlideshow && Lightbox.loopSlides) || (!Lightbox.isSlideshow && Lightbox.loopItems))) || Lightbox.activeImage !== 0) {
        Lightbox.changeData(Lightbox.activeImage - 1);
      }

    }
    // Display next image (n, ->).
    else if (Lightbox.checkKey(Lightbox.keysNext, key, keycode)) {
      if ((Lightbox.total > 1 && ((Lightbox.isSlideshow && Lightbox.loopSlides) || (!Lightbox.isSlideshow && Lightbox.loopItems))) || Lightbox.activeImage != (Lightbox.total - 1)) {
        Lightbox.changeData(Lightbox.activeImage + 1);
      }
    }
    // Zoom in.
    else if (Lightbox.checkKey(Lightbox.keysZoom, key, keycode) && !Lightbox.disableResize && !Lightbox.disableZoom && !Lightbox.isSlideshow && !Lightbox.isLightframe) {
      if (Lightbox.isZoomedIn) {
        Lightbox.changeData(Lightbox.activeImage, false);
      }
      else if (!Lightbox.isZoomedIn) {
        Lightbox.changeData(Lightbox.activeImage, true);
      }
      return false;
    }
    // Toggle play / pause (space).
    else if (Lightbox.checkKey(Lightbox.keysPlayPause, key, keycode) && Lightbox.isSlideshow) {

      if (Lightbox.isPaused) {
        Lightbox.togglePlayPause("lightshowPlay", "lightshowPause");
      }
      else {
        Lightbox.togglePlayPause("lightshowPause", "lightshowPlay");
      }
      return false;
    }
  },

  preloadNeighborImages: function() {

    if ((Lightbox.total - 1) > Lightbox.activeImage) {
      preloadNextImage = new Image();
      preloadNextImage.src = Lightbox.imageArray[Lightbox.activeImage + 1][0];
    }
    if (Lightbox.activeImage > 0) {
      preloadPrevImage = new Image();
      preloadPrevImage.src = Lightbox.imageArray[Lightbox.activeImage - 1][0];
    }

  },

  end: function(caller) {
    var closeClick = (caller == 'slideshow' ? false : true);
    if (Lightbox.isSlideshow && Lightbox.isPaused && !closeClick) {
      return;
    }
    // To prevent double clicks on navigation links.
    if (Lightbox.inprogress === true && caller != 'forceClose') {
      return;
    }
    Lightbox.disableKeyboardNav();
    $('#lightbox').hide();
    $("#lightbox2-overlay").fadeOut();
    Lightbox.isPaused = true;
    Lightbox.inprogress = false;
    // Replaces calls to showSelectBoxes() and showFlash() in original
    // lightbox2.
    Lightbox.toggleSelectsFlash('visible');
    if (Lightbox.isSlideshow) {
      for (var i = 0; i < Lightbox.slideIdCount; i++) {
        window.clearTimeout(Lightbox.slideIdArray[i]);
      }
      $('#lightshowPause, #lightshowPlay').hide();
    }
    else if (Lightbox.isLightframe) {
      $('#frameContainer').empty().hide();
    }
    else if (Lightbox.isVideo || Lightbox.isModal) {
      if (!Lightbox.auto_modal) {
        $('#modalContainer').hide().html("");
      }
      Lightbox.auto_modal = false;
    }
  },


  // getPageScroll()
  // Returns array with x,y page scroll values.
  // Core code from - quirksmode.com.
  getPageScroll : function() {

    var xScroll, yScroll;

    if (self.pageYOffset || self.pageXOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    }
    else if (document.documentElement && (document.documentElement.scrollTop || document.documentElement.scrollLeft)) {  // Explorer 6 Strict.
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    }
    else if (document.body) {// All other Explorers.
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;
    }

    arrayPageScroll = [xScroll,yScroll];
    return arrayPageScroll;
  },

  // getPageSize()
  // Returns array with page width, height and window width, height.
  // Core code from - quirksmode.com.
  // Edit for Firefox by pHaez.

  getPageSize : function() {

    var xScroll, yScroll;

    if (window.innerHeight && window.scrollMaxY) {
      xScroll = window.innerWidth + window.scrollMaxX;
      yScroll = window.innerHeight + window.scrollMaxY;
    }
    else if (document.body.scrollHeight > document.body.offsetHeight) { // All but Explorer Mac.
      xScroll = document.body.scrollWidth;
      yScroll = document.body.scrollHeight;
    }
    else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari.
      xScroll = document.body.offsetWidth;
      yScroll = document.body.offsetHeight;
    }

    var windowWidth, windowHeight;

    if (self.innerHeight) { // All except Explorer.
      if (document.documentElement.clientWidth) {
        windowWidth = document.documentElement.clientWidth;
      }
      else {
        windowWidth = self.innerWidth;
      }
      windowHeight = self.innerHeight;
    }
    else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode.
      windowWidth = document.documentElement.clientWidth;
      windowHeight = document.documentElement.clientHeight;
    }
    else if (document.body) { // Other Explorers.
      windowWidth = document.body.clientWidth;
      windowHeight = document.body.clientHeight;
    }
    // For small pages with total height less than height of the viewport.
    if (yScroll < windowHeight) {
      pageHeight = windowHeight;
    }
    else {
      pageHeight = yScroll;
    }
    // For small pages with total width less than width of the viewport.
    if (xScroll < windowWidth) {
      pageWidth = xScroll;
    }
    else {
      pageWidth = windowWidth;
    }
    arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight);
    return arrayPageSize;
  },


  // pause(numberMillis)
  pause : function(ms) {
    var date = new Date();
    var curDate = null;
    do { curDate = new Date(); }
    while (curDate - date < ms);
  },


  // toggleSelectsFlash()
  // Hide / unhide select lists and flash objects as they appear above the
  // lightbox in some browsers.
  toggleSelectsFlash: function (state) {
    if (state == 'visible') {
      $("select.lightbox_hidden, embed.lightbox_hidden, object.lightbox_hidden").show();
    }
    else if (state == 'hide') {
      $("select:visible, embed:visible, object:visible").not('#lightboxAutoModal select, #lightboxAutoModal embed, #lightboxAutoModal object').addClass("lightbox_hidden");
      $("select.lightbox_hidden, embed.lightbox_hidden, object.lightbox_hidden").hide();
    }
  },


  // parseRel()
  parseRel: function (link) {
    var parts = [];
    parts["rel"] = parts["title"] = parts["group"] = parts["style"] = parts["flashvars"] = null;
    if (!$(link).attr('rel')) return parts;
    parts["rel"] = $(link).attr('rel').match(/\w+/)[0];

    if ($(link).attr('rel').match(/\[(.*)\]/)) {
      var info = $(link).attr('rel').match(/\[(.*?)\]/)[1].split('|');
      parts["group"] = info[0];
      parts["style"] = info[1];
      if (parts["style"] != undefined && parts["style"].match(/flashvars:\s?(.*?);/)) {
        parts["flashvars"] = parts["style"].match(/flashvars:\s?(.*?);/)[1];
      }
    }
    if ($(link).attr('rel').match(/\[.*\]\[(.*)\]/)) {
      parts["title"] = $(link).attr('rel').match(/\[.*\]\[(.*)\]/)[1];
    }
    return parts;
  },

  // setStyles()
  setStyles: function(item, styles) {
    item.width = Lightbox.iframe_width;
    item.height = Lightbox.iframe_height;
    item.scrolling = "auto";

    if (!styles) return item;
    var stylesArray = styles.split(';');
    for (var i = 0; i< stylesArray.length; i++) {
      if (stylesArray[i].indexOf('width:') >= 0) {
        var w = stylesArray[i].replace('width:', '');
        item.width = jQuery.trim(w);
      }
      else if (stylesArray[i].indexOf('height:') >= 0) {
        var h = stylesArray[i].replace('height:', '');
        item.height = jQuery.trim(h);
      }
      else if (stylesArray[i].indexOf('scrolling:') >= 0) {
        var scrolling = stylesArray[i].replace('scrolling:', '');
        item.scrolling = jQuery.trim(scrolling);
      }
      else if (stylesArray[i].indexOf('overflow:') >= 0) {
        var overflow = stylesArray[i].replace('overflow:', '');
        item.overflow = jQuery.trim(overflow);
      }
    }
    return item;
  },


  // togglePlayPause()
  // Hide the pause / play button as appropriate.  If pausing the slideshow also
  // clear the timers, otherwise move onto the next image.
  togglePlayPause: function(hideId, showId) {
    if (Lightbox.isSlideshow && hideId == "lightshowPause") {
      for (var i = 0; i < Lightbox.slideIdCount; i++) {
        window.clearTimeout(Lightbox.slideIdArray[i]);
      }
    }
    $('#' + hideId).hide();
    $('#' + showId).show();

    if (hideId == "lightshowPlay") {
      Lightbox.isPaused = false;
      if (!Lightbox.loopSlides && Lightbox.activeImage == (Lightbox.total - 1)) {
        Lightbox.end();
      }
      else if (Lightbox.total > 1) {
        Lightbox.changeData(Lightbox.activeImage + 1);
      }
    }
    else {
      Lightbox.isPaused = true;
    }
  },

  triggerLightbox: function (rel_type, rel_group) {
    if (rel_type.length) {
      if (rel_group && rel_group.length) {
        $("a[rel^='" + rel_type +"\[" + rel_group + "\]'], area[rel^='" + rel_type +"\[" + rel_group + "\]']").eq(0).trigger("click");
      }
      else {
        $("a[rel^='" + rel_type +"'], area[rel^='" + rel_type +"']").eq(0).trigger("click");
      }
    }
  },

  detectMacFF2: function() {
    var ua = navigator.userAgent.toLowerCase();
    if (/firefox[\/\s](\d+\.\d+)/.test(ua)) {
      var ffversion = new Number(RegExp.$1);
      if (ffversion < 3 && ua.indexOf('mac') != -1) {
        return true;
      }
    }
    return false;
  },

  checkKey: function(keys, key, code) {
    return (jQuery.inArray(key, keys) != -1 || jQuery.inArray(String(code), keys) != -1);
  },

  filterXSS: function(str, allowed_tags) {
    var output = "";
    $.ajax({
      url: Drupal.settings.basePath + 'system/lightbox2/filter-xss',
      data: {
        'string' : str,
        'allowed_tags' : allowed_tags
      },
      type: "POST",
      async: false,
      dataType:  "json",
      success: function(data) {
        output = data;
      }
    });
    return output;
  }

};

// Initialize the lightbox.
Drupal.behaviors.initLightbox = function (context) {
  $('body:not(.lightbox-processed)', context).addClass('lightbox-processed').each(function() {
    Lightbox.initialize();
    return false; // Break the each loop.
  });

  // Attach lightbox to any links with lightbox rels.
  Lightbox.initList(context);
  $('#lightboxAutoModal', context).triggerHandler('click');
};

;
/**
 * SyntaxHighlighter
 * http://alexgorbatchev.com/
 *
 * SyntaxHighlighter is donationware. If you are using it, please donate.
 * http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
 *
 * @version
 * 2.1.364 (October 15 2009)
 * 
 * @copyright
 * Copyright (C) 2004-2009 Alex Gorbatchev.
 *
 * @license
 * This file is part of SyntaxHighlighter.
 * 
 * SyntaxHighlighter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * SyntaxHighlighter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with SyntaxHighlighter.  If not, see <http://www.gnu.org/copyleft/lesser.html>.
 */
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;
/**
 * SyntaxHighlighter
 * http://alexgorbatchev.com/
 *
 * SyntaxHighlighter is donationware. If you are using it, please donate.
 * http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
 *
 * @version
 * 2.1.364 (October 15 2009)
 * 
 * @copyright
 * Copyright (C) 2004-2009 Alex Gorbatchev.
 *
 * @license
 * This file is part of SyntaxHighlighter.
 * 
 * SyntaxHighlighter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * SyntaxHighlighter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with SyntaxHighlighter.  If not, see <http://www.gnu.org/copyleft/lesser.html>.
 */
SyntaxHighlighter.brushes.Diff = function()
{
	this.regexList = [
		{ regex: /^\+\+\+.*$/gm,		css: 'color2' },
		{ regex: /^\-\-\-.*$/gm,		css: 'color2' },
		{ regex: /^\s.*$/gm,			css: 'color1' },
		{ regex: /^@@.*@@$/gm,			css: 'variable' },
		{ regex: /^\+[^\+]{1}.*$/gm,	css: 'string' },
		{ regex: /^\-[^\-]{1}.*$/gm,	css: 'comments' }
		];
};

SyntaxHighlighter.brushes.Diff.prototype	= new SyntaxHighlighter.Highlighter();
SyntaxHighlighter.brushes.Diff.aliases		= ['diff', 'patch'];
;
/**
 * SyntaxHighlighter
 * http://alexgorbatchev.com/
 *
 * SyntaxHighlighter is donationware. If you are using it, please donate.
 * http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
 *
 * @version
 * 2.1.364 (October 15 2009)
 * 
 * @copyright
 * Copyright (C) 2004-2009 Alex Gorbatchev.
 *
 * @license
 * This file is part of SyntaxHighlighter.
 * 
 * SyntaxHighlighter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * SyntaxHighlighter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with SyntaxHighlighter.  If not, see <http://www.gnu.org/copyleft/lesser.html>.
 */
SyntaxHighlighter.brushes.Java = function()
{
	var keywords =	'abstract assert boolean break byte case catch char class const ' +
					'continue default do double else enum extends ' +
					'false final finally float for goto if implements import ' +
					'instanceof int interface long native new null ' +
					'package private protected public return ' +
					'short static strictfp super switch synchronized this throw throws true ' +
					'transient try void volatile while';

	this.regexList = [
		{ regex: SyntaxHighlighter.regexLib.singleLineCComments,	css: 'comments' },		// one line comments
		{ regex: /\/\*([^\*][\s\S]*)?\*\//gm,						css: 'comments' },	 	// multiline comments
		{ regex: /\/\*(?!\*\/)\*[\s\S]*?\*\//gm,					css: 'preprocessor' },	// documentation comments
		{ regex: SyntaxHighlighter.regexLib.doubleQuotedString,		css: 'string' },		// strings
		{ regex: SyntaxHighlighter.regexLib.singleQuotedString,		css: 'string' },		// strings
		{ regex: /\b([\d]+(\.[\d]+)?|0x[a-f0-9]+)\b/gi,				css: 'value' },			// numbers
		{ regex: /(?!\@interface\b)\@[\$\w]+\b/g,					css: 'color1' },		// annotation @anno
		{ regex: /\@interface\b/g,									css: 'color2' },		// @interface keyword
		{ regex: new RegExp(this.getKeywords(keywords), 'gm'),		css: 'keyword' }		// java keyword
		];

	this.forHtmlScript({
		left	: /(&lt;|<)%[@!=]?/g, 
		right	: /%(&gt;|>)/g 
	});
};

SyntaxHighlighter.brushes.Java.prototype	= new SyntaxHighlighter.Highlighter();
SyntaxHighlighter.brushes.Java.aliases		= ['java'];
;
/**
 * SyntaxHighlighter
 * http://alexgorbatchev.com/
 *
 * SyntaxHighlighter is donationware. If you are using it, please donate.
 * http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
 *
 * @version
 * 2.1.364 (October 15 2009)
 * 
 * @copyright
 * Copyright (C) 2004-2009 Alex Gorbatchev.
 *
 * @license
 * This file is part of SyntaxHighlighter.
 * 
 * SyntaxHighlighter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * SyntaxHighlighter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with SyntaxHighlighter.  If not, see <http://www.gnu.org/copyleft/lesser.html>.
 */
SyntaxHighlighter.brushes.Perl = function()
{
	// Contributed by David Simmons-Duffin and Marty Kube
	
	var funcs = 
		'abs accept alarm atan2 bind binmode chdir chmod chomp chop chown chr ' + 
		'chroot close closedir connect cos crypt defined delete each endgrent ' + 
		'endhostent endnetent endprotoent endpwent endservent eof exec exists ' + 
		'exp fcntl fileno flock fork format formline getc getgrent getgrgid ' + 
		'getgrnam gethostbyaddr gethostbyname gethostent getlogin getnetbyaddr ' + 
		'getnetbyname getnetent getpeername getpgrp getppid getpriority ' + 
		'getprotobyname getprotobynumber getprotoent getpwent getpwnam getpwuid ' + 
		'getservbyname getservbyport getservent getsockname getsockopt glob ' + 
		'gmtime grep hex index int ioctl join keys kill lc lcfirst length link ' + 
		'listen localtime lock log lstat map mkdir msgctl msgget msgrcv msgsnd ' + 
		'oct open opendir ord pack pipe pop pos print printf prototype push ' + 
		'quotemeta rand read readdir readline readlink readpipe recv rename ' + 
		'reset reverse rewinddir rindex rmdir scalar seek seekdir select semctl ' + 
		'semget semop send setgrent sethostent setnetent setpgrp setpriority ' + 
		'setprotoent setpwent setservent setsockopt shift shmctl shmget shmread ' + 
		'shmwrite shutdown sin sleep socket socketpair sort splice split sprintf ' + 
		'sqrt srand stat study substr symlink syscall sysopen sysread sysseek ' + 
		'system syswrite tell telldir time times tr truncate uc ucfirst umask ' + 
		'undef unlink unpack unshift utime values vec wait waitpid warn write';
    
	var keywords =  
		'bless caller continue dbmclose dbmopen die do dump else elsif eval exit ' +
		'for foreach goto if import last local my next no our package redo ref ' + 
		'require return sub tie tied unless untie until use wantarray while';
    
	this.regexList = [
		{ regex: new RegExp('#[^!].*$', 'gm'),					css: 'comments' },
		{ regex: new RegExp('^\\s*#!.*$', 'gm'),				css: 'preprocessor' }, // shebang
		{ regex: SyntaxHighlighter.regexLib.doubleQuotedString,	css: 'string' },
		{ regex: SyntaxHighlighter.regexLib.singleQuotedString,	css: 'string' },
		{ regex: new RegExp('(\\$|@|%)\\w+', 'g'),				css: 'variable' },
		{ regex: new RegExp(this.getKeywords(funcs), 'gmi'),	css: 'functions' },
		{ regex: new RegExp(this.getKeywords(keywords), 'gm'),	css: 'keyword' }
	    ];

	this.forHtmlScript(SyntaxHighlighter.regexLib.phpScriptTags);
}

SyntaxHighlighter.brushes.Perl.prototype	= new SyntaxHighlighter.Highlighter();
SyntaxHighlighter.brushes.Perl.aliases		= ['perl', 'Perl', 'pl'];;
/**
 * SyntaxHighlighter
 * http://alexgorbatchev.com/
 *
 * SyntaxHighlighter is donationware. If you are using it, please donate.
 * http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
 *
 * @version
 * 2.1.364 (October 15 2009)
 * 
 * @copyright
 * Copyright (C) 2004-2009 Alex Gorbatchev.
 *
 * @license
 * This file is part of SyntaxHighlighter.
 * 
 * SyntaxHighlighter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * SyntaxHighlighter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with SyntaxHighlighter.  If not, see <http://www.gnu.org/copyleft/lesser.html>.
 */
SyntaxHighlighter.brushes.Python = function()
{
	// Contributed by Gheorghe Milas and Ahmad Sherif
	
	var keywords =  'and assert break class continue def del elif else ' +
					'except exec finally for from global if import in is ' +
					'lambda not or pass print raise return try yield while';

	var funcs = '__import__ abs all any apply basestring bin bool buffer callable ' +
				'chr classmethod cmp coerce compile complex delattr dict dir ' +
				'divmod enumerate eval execfile file filter float format frozenset ' +
				'getattr globals hasattr hash help hex id input int intern ' +
				'isinstance issubclass iter len list locals long map max min next ' +
				'object oct open ord pow print property range raw_input reduce ' +
				'reload repr reversed round set setattr slice sorted staticmethod ' +
				'str sum super tuple type type unichr unicode vars xrange zip';

	var special =  'None True False self cls class_';

	this.regexList = [
			{ regex: SyntaxHighlighter.regexLib.singleLinePerlComments, css: 'comments' },
			{ regex: /^\s*@\w+/gm, 										css: 'decorator' },
			{ regex: /(['\"]{3})([^\1])*?\1/gm, 						css: 'comments' },
			{ regex: /"(?!")(?:\.|\\\"|[^\""\n])*"/gm, 					css: 'string' },
			{ regex: /'(?!')(?:\.|(\\\')|[^\''\n])*'/gm, 				css: 'string' },
			{ regex: /\+|\-|\*|\/|\%|=|==/gm, 							css: 'keyword' },
			{ regex: /\b\d+\.?\w*/g, 									css: 'value' },
			{ regex: new RegExp(this.getKeywords(funcs), 'gmi'),		css: 'functions' },
			{ regex: new RegExp(this.getKeywords(keywords), 'gm'), 		css: 'keyword' },
			{ regex: new RegExp(this.getKeywords(special), 'gm'), 		css: 'color1' }
			];
			
	this.forHtmlScript(SyntaxHighlighter.regexLib.aspScriptTags);
};

SyntaxHighlighter.brushes.Python.prototype  = new SyntaxHighlighter.Highlighter();
SyntaxHighlighter.brushes.Python.aliases    = ['py', 'python'];
;
/**
 * SyntaxHighlighter
 * http://alexgorbatchev.com/
 *
 * SyntaxHighlighter is donationware. If you are using it, please donate.
 * http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
 *
 * @version
 * 2.1.364 (October 15 2009)
 * 
 * @copyright
 * Copyright (C) 2004-2009 Alex Gorbatchev.
 *
 * @license
 * This file is part of SyntaxHighlighter.
 * 
 * SyntaxHighlighter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * SyntaxHighlighter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with SyntaxHighlighter.  If not, see <http://www.gnu.org/copyleft/lesser.html>.
 */
SyntaxHighlighter.brushes.Sql = function()
{
	var funcs	=	'abs avg case cast coalesce convert count current_timestamp ' +
					'current_user day isnull left lower month nullif replace right ' +
					'session_user space substring sum system_user upper user year';

	var keywords =	'absolute action add after alter as asc at authorization begin bigint ' +
					'binary bit by cascade char character check checkpoint close collate ' +
					'column commit committed connect connection constraint contains continue ' +
					'create cube current current_date current_time cursor database date ' +
					'deallocate dec decimal declare default delete desc distinct double drop ' +
					'dynamic else end end-exec escape except exec execute false fetch first ' +
					'float for force foreign forward free from full function global goto grant ' +
					'group grouping having hour ignore index inner insensitive insert instead ' +
					'int integer intersect into is isolation key last level load local max min ' +
					'minute modify move name national nchar next no numeric of off on only ' +
					'open option order out output partial password precision prepare primary ' +
					'prior privileges procedure public read real references relative repeatable ' +
					'restrict return returns revoke rollback rollup rows rule schema scroll ' +
					'second section select sequence serializable set size smallint static ' +
					'statistics table temp temporary then time timestamp to top transaction ' +
					'translation trigger true truncate uncommitted union unique update values ' +
					'varchar varying view when where with work';

	var operators =	'all and any between cross in join like not null or outer some';

	this.regexList = [
		{ regex: /--(.*)$/gm,												css: 'comments' },			// one line and multiline comments
		{ regex: SyntaxHighlighter.regexLib.multiLineDoubleQuotedString,	css: 'string' },			// double quoted strings
		{ regex: SyntaxHighlighter.regexLib.multiLineSingleQuotedString,	css: 'string' },			// single quoted strings
		{ regex: new RegExp(this.getKeywords(funcs), 'gmi'),				css: 'color2' },			// functions
		{ regex: new RegExp(this.getKeywords(operators), 'gmi'),			css: 'color1' },			// operators and such
		{ regex: new RegExp(this.getKeywords(keywords), 'gmi'),				css: 'keyword' }			// keyword
		];
};

SyntaxHighlighter.brushes.Sql.prototype	= new SyntaxHighlighter.Highlighter();
SyntaxHighlighter.brushes.Sql.aliases	= ['sql'];

;
/**
 * SyntaxHighlighter
 * http://alexgorbatchev.com/
 *
 * SyntaxHighlighter is donationware. If you are using it, please donate.
 * http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
 *
 * @version
 * 2.1.364 (October 15 2009)
 * 
 * @copyright
 * Copyright (C) 2004-2009 Alex Gorbatchev.
 *
 * @license
 * This file is part of SyntaxHighlighter.
 * 
 * SyntaxHighlighter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * SyntaxHighlighter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with SyntaxHighlighter.  If not, see <http://www.gnu.org/copyleft/lesser.html>.
 */
SyntaxHighlighter.brushes.Xml = function()
{
	function process(match, regexInfo)
	{
		var constructor = SyntaxHighlighter.Match,
			code = match[0],
			tag = new XRegExp('(&lt;|<)[\\s\\/\\?]*(?<name>[:\\w-\\.]+)', 'xg').exec(code),
			result = []
			;
		
		if (match.attributes != null) 
		{
			var attributes,
				regex = new XRegExp('(?<name> [\\w:\\-\\.]+)' +
									'\\s*=\\s*' +
									'(?<value> ".*?"|\'.*?\'|\\w+)',
									'xg');

			while ((attributes = regex.exec(code)) != null) 
			{
				result.push(new constructor(attributes.name, match.index + attributes.index, 'color1'));
				result.push(new constructor(attributes.value, match.index + attributes.index + attributes[0].indexOf(attributes.value), 'string'));
			}
		}

		if (tag != null)
			result.push(
				new constructor(tag.name, match.index + tag[0].indexOf(tag.name), 'keyword')
			);

		return result;
	}
	
	this.regexList = [
		{ regex: new XRegExp('(\\&lt;|<)\\!\\[[\\w\\s]*?\\[(.|\\s)*?\\]\\](\\&gt;|>)', 'gm'),			css: 'color2' },	// <![ ... [ ... ]]>
		{ regex: SyntaxHighlighter.regexLib.xmlComments,												css: 'comments' },	// <!-- ... -->
		{ regex: new XRegExp('(&lt;|<)[\\s\\/\\?]*(\\w+)(?<attributes>.*?)[\\s\\/\\?]*(&gt;|>)', 'sg'), func: process }
	];
};

SyntaxHighlighter.brushes.Xml.prototype	= new SyntaxHighlighter.Highlighter();
SyntaxHighlighter.brushes.Xml.aliases	= ['xml', 'xhtml', 'xslt', 'html'];
;
/*
ASCIIMathMLwFallback.js
==============
This file contains JavaScript functions to convert ASCII math notation
to Presentation MathML. The conversion is done while the (X)HTML page 
loads, and should work with Firefox/Mozilla/Netscape 7+ and Internet 
Explorer 6+MathPlayer (http://www.dessci.com/en/products/mathplayer/).
Just add the next line to your (X)HTML page with this file in the same folder:
<script type="text/javascript" src="ASCIIMathMLwFallback.js"></script>
This is a convenient and inexpensive solution for authoring MathML.

If MathML is not available on the client server, this file contains JavaScript 
functions to convert ASCII math notation to TeX allowing serverside rendering
to image files.

ASCIIMathML, Version 1.4.7 Aug 30, 2005, (c) Peter Jipsen http://www.chapman.edu/~jipsen

Modified with TeX conversion for IMG fallback Sept 6, 2006 (c) David Lippman http://www.pierce.ctc.edu/dlippman

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at
your option) any later version.

This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License (at http://www.gnu.org/copyleft/gpl.html) 
for more details.
*/

//var AMTcgiloc = "http://www.imathas.com/cgi-bin/mimetex.cgi"; //path to CGI script that
						     //can render a TeX strin
var AMTcgiloc = null;
var checkForMathML = true;   // check if browser can display MathML
var notifyIfNoMathML = true; // display note if no MathML capability
var alertIfNoMathML = false;  // show alert box if no MathML capability
var mathcolor = "";       // change it to "" (to inherit) or any other color
var mathfontfamily = "Serif"; // change to "" to inherit (works in IE) 
                              // or another family (e.g. "arial")
var displaystyle = true;      // puts limits above and below large operators
var showasciiformulaonhover = true; // helps students learn ASCIIMath
var decimalsign = ".";        // change to "," if you like, beware of `(1,2)`!
var AMdelimiter1 = "`", AMescape1 = "\\\\`"; // can use other characters
var AMusedelimiter2 = false; 		//whether to use second delimiter below
var AMdelimiter2 = "$", AMescape2 = "\\\\\\$", AMdelimiter2regexp = "\\$";
var doubleblankmathdelimiter = false; // if true,  x+1  is equal to `x+1`
                                      // for IE this works only in <!--   -->
//var separatetokens;// has been removed (email me if this is a problem)
var isIE = document.createElementNS==null;


if (document.getElementById==null) 
  alert("This webpage requires a recent browser such as\
\nMozilla/Netscape 7+ or Internet Explorer 6+MathPlayer")

// all further global variables start with "AM"

function AMcreateElementXHTML(t) {
  if (isIE) return document.createElement(t);
  else return document.createElementNS("http://www.w3.org/1999/xhtml",t);
}

function AMnoMathMLNote() {
  var nd = AMcreateElementXHTML("h3");
  nd.setAttribute("align","center")
  nd.appendChild(AMcreateElementXHTML("p"));
  nd.appendChild(document.createTextNode("To view the "));
  var an = AMcreateElementXHTML("a");
  an.appendChild(document.createTextNode("ASCIIMathML"));
  an.setAttribute("href","http://www.chapman.edu/~jipsen/asciimath.html");
  nd.appendChild(an);
  nd.appendChild(document.createTextNode(" notation use Internet Explorer 6+"));  
  an = AMcreateElementXHTML("a");
  an.appendChild(document.createTextNode("MathPlayer"));
  an.setAttribute("href","http://www.dessci.com/en/products/mathplayer/download.htm");
  nd.appendChild(an);
  nd.appendChild(document.createTextNode(" or Netscape/Mozilla/Firefox"));
  nd.appendChild(AMcreateElementXHTML("p"));
  return nd;
}

function AMisMathMLavailable() {
  //if (navigator.appName.slice(0,8)=="Netscape") 
    //if (navigator.appVersion.slice(0,1)>="5") return null;
    //else return AMnoMathMLNote();
    if (navigator.product && navigator.product=='Gecko') {
	   var rv = navigator.userAgent.toLowerCase().match(/rv:\s*([\d\.]+)/);
	   if (rv!=null) {
		rv = rv[1].split('.');
		if (rv.length<3) { rv[2] = 0;}
		if (rv.length<2) { rv[1] = 0;}
	   }
	   if (rv!=null && 10000*rv[0]+100*rv[1]+1*rv[2]>=10100) {
		   AMisGecko = 10000*rv[0]+100*rv[1]+1*rv[2];
		   return null;
	   } else {
		   return AMnoMathMLNote();
	   }
    }
  else if (navigator.appName.slice(0,9)=="Microsoft")
    try {
        var ActiveX = new ActiveXObject("MathPlayer.Factory.1");
        return null;
    } catch (e) {
        return AMnoMathMLNote();
    }
  else return AMnoMathMLNote();
}

// character lists for Mozilla/Netscape fonts
var AMcal = [0xEF35,0x212C,0xEF36,0xEF37,0x2130,0x2131,0xEF38,0x210B,0x2110,0xEF39,0xEF3A,0x2112,0x2133,0xEF3B,0xEF3C,0xEF3D,0xEF3E,0x211B,0xEF3F,0xEF40,0xEF41,0xEF42,0xEF43,0xEF44,0xEF45,0xEF46];
var AMfrk = [0xEF5D,0xEF5E,0x212D,0xEF5F,0xEF60,0xEF61,0xEF62,0x210C,0x2111,0xEF63,0xEF64,0xEF65,0xEF66,0xEF67,0xEF68,0xEF69,0xEF6A,0x211C,0xEF6B,0xEF6C,0xEF6D,0xEF6E,0xEF6F,0xEF70,0xEF71,0x2128];
var AMbbb = [0xEF8C,0xEF8D,0x2102,0xEF8E,0xEF8F,0xEF90,0xEF91,0x210D,0xEF92,0xEF93,0xEF94,0xEF95,0xEF96,0x2115,0xEF97,0x2119,0x211A,0x211D,0xEF98,0xEF99,0xEF9A,0xEF9B,0xEF9C,0xEF9D,0xEF9E,0x2124];

var CONST = 0, UNARY = 1, BINARY = 2, INFIX = 3, LEFTBRACKET = 4, 
    RIGHTBRACKET = 5, SPACE = 6, UNDEROVER = 7, DEFINITION = 8,
    LEFTRIGHT = 9, TEXT = 10; // token types

var AMsqrt = {input:"sqrt", tag:"msqrt", output:"sqrt", tex:null, ttype:UNARY},
  AMroot  = {input:"root", tag:"mroot", output:"root", tex:null, ttype:BINARY},
  AMfrac  = {input:"frac", tag:"mfrac", output:"/",    tex:null, ttype:BINARY},
  AMdiv   = {input:"/",    tag:"mfrac", output:"/",    tex:null, ttype:INFIX},
  AMover  = {input:"stackrel", tag:"mover", output:"stackrel", tex:null, ttype:BINARY},
  AMsub   = {input:"_",    tag:"msub",  output:"_",    tex:null, ttype:INFIX},
  AMsup   = {input:"^",    tag:"msup",  output:"^",    tex:null, ttype:INFIX},
  AMtext  = {input:"text", tag:"mtext", output:"text", tex:null, ttype:TEXT},
  AMmbox  = {input:"mbox", tag:"mtext", output:"mbox", tex:null, ttype:TEXT},
  AMquote = {input:"\"",   tag:"mtext", output:"mbox", tex:null, ttype:TEXT};

var AMsymbols = [
//some greek symbols
{input:"alpha",  tag:"mi", output:"\u03B1", tex:null, ttype:CONST},
{input:"beta",   tag:"mi", output:"\u03B2", tex:null, ttype:CONST},
{input:"chi",    tag:"mi", output:"\u03C7", tex:null, ttype:CONST},
{input:"delta",  tag:"mi", output:"\u03B4", tex:null, ttype:CONST},
{input:"Delta",  tag:"mo", output:"\u0394", tex:null, ttype:CONST},
{input:"epsi",   tag:"mi", output:"\u03B5", tex:"epsilon", ttype:CONST},
{input:"varepsilon", tag:"mi", output:"\u025B", tex:null, ttype:CONST},
{input:"eta",    tag:"mi", output:"\u03B7", tex:null, ttype:CONST},
{input:"gamma",  tag:"mi", output:"\u03B3", tex:null, ttype:CONST},
{input:"Gamma",  tag:"mo", output:"\u0393", tex:null, ttype:CONST},
{input:"iota",   tag:"mi", output:"\u03B9", tex:null, ttype:CONST},
{input:"kappa",  tag:"mi", output:"\u03BA", tex:null, ttype:CONST},
{input:"lambda", tag:"mi", output:"\u03BB", tex:null, ttype:CONST},
{input:"Lambda", tag:"mo", output:"\u039B", tex:null, ttype:CONST},
{input:"mu",     tag:"mi", output:"\u03BC", tex:null, ttype:CONST},
{input:"nu",     tag:"mi", output:"\u03BD", tex:null, ttype:CONST},
{input:"omega",  tag:"mi", output:"\u03C9", tex:null, ttype:CONST},
{input:"Omega",  tag:"mo", output:"\u03A9", tex:null, ttype:CONST},
{input:"phi",    tag:"mi", output:"\u03C6", tex:null, ttype:CONST},
{input:"varphi", tag:"mi", output:"\u03D5", tex:null, ttype:CONST},
{input:"Phi",    tag:"mo", output:"\u03A6", tex:null, ttype:CONST},
{input:"pi",     tag:"mi", output:"\u03C0", tex:null, ttype:CONST},
{input:"Pi",     tag:"mo", output:"\u03A0", tex:null, ttype:CONST},
{input:"psi",    tag:"mi", output:"\u03C8", tex:null, ttype:CONST},
{input:"Psi",    tag:"mi", output:"\u03A8", tex:null, ttype:CONST},
{input:"rho",    tag:"mi", output:"\u03C1", tex:null, ttype:CONST},
{input:"sigma",  tag:"mi", output:"\u03C3", tex:null, ttype:CONST},
{input:"Sigma",  tag:"mo", output:"\u03A3", tex:null, ttype:CONST},
{input:"tau",    tag:"mi", output:"\u03C4", tex:null, ttype:CONST},
{input:"theta",  tag:"mi", output:"\u03B8", tex:null, ttype:CONST},
{input:"vartheta", tag:"mi", output:"\u03D1", tex:null, ttype:CONST},
{input:"Theta",  tag:"mo", output:"\u0398", tex:null, ttype:CONST},
{input:"upsilon", tag:"mi", output:"\u03C5", tex:null, ttype:CONST},
{input:"xi",     tag:"mi", output:"\u03BE", tex:null, ttype:CONST},
{input:"Xi",     tag:"mo", output:"\u039E", tex:null, ttype:CONST},
{input:"zeta",   tag:"mi", output:"\u03B6", tex:null, ttype:CONST},

//binary operation symbols
{input:"*",  tag:"mo", output:"\u22C5", tex:"cdot", ttype:CONST},
{input:"**", tag:"mo", output:"\u22C6", tex:"star", ttype:CONST},
{input:"//", tag:"mo", output:"/",      tex:null, ttype:CONST},
{input:"\\\\", tag:"mo", output:"\\",   tex:"backslash", ttype:CONST},
{input:"setminus", tag:"mo", output:"\\", tex:null, ttype:CONST},
{input:"xx", tag:"mo", output:"\u00D7", tex:"times", ttype:CONST},
{input:"-:", tag:"mo", output:"\u00F7", tex:"div", ttype:CONST},
{input:"divide",   tag:"mo", output:"-:", tex:null, ttype:DEFINITION},
{input:"@",  tag:"mo", output:"\u2218", tex:"circ", ttype:CONST},
{input:"o+", tag:"mo", output:"\u2295", tex:"oplus", ttype:CONST},
{input:"ox", tag:"mo", output:"\u2297", tex:"otimes", ttype:CONST},
{input:"o.", tag:"mo", output:"\u2299", tex:"odot", ttype:CONST},
{input:"sum", tag:"mo", output:"\u2211", tex:null, ttype:UNDEROVER},
{input:"prod", tag:"mo", output:"\u220F", tex:null, ttype:UNDEROVER},
{input:"^^",  tag:"mo", output:"\u2227", tex:"wedge", ttype:CONST},
{input:"^^^", tag:"mo", output:"\u22C0", tex:"bigwedge", ttype:UNDEROVER},
{input:"vv",  tag:"mo", output:"\u2228", tex:"vee", ttype:CONST},
{input:"vvv", tag:"mo", output:"\u22C1", tex:"bigvee", ttype:UNDEROVER},
{input:"nn",  tag:"mo", output:"\u2229", tex:"cap", ttype:CONST},
{input:"nnn", tag:"mo", output:"\u22C2", tex:"bigcap", ttype:UNDEROVER},
{input:"uu",  tag:"mo", output:"\u222A", tex:"cup", ttype:CONST},
{input:"uuu", tag:"mo", output:"\u22C3", tex:"bigcup", ttype:UNDEROVER},

//binary relation symbols
{input:"!=",  tag:"mo", output:"\u2260", tex:"ne", ttype:CONST},
{input:":=",  tag:"mo", output:":=",     tex:null, ttype:CONST},
{input:"lt",  tag:"mo", output:"<",      tex:null, ttype:CONST},
{input:"gt",  tag:"mo", output:">",      tex:null, ttype:CONST},
{input:"<=",  tag:"mo", output:"\u2264", tex:"le", ttype:CONST},
{input:"lt=", tag:"mo", output:"\u2264", tex:"leq", ttype:CONST},
{input:"gt=",  tag:"mo", output:"\u2265", tex:"geq", ttype:CONST},
{input:">=",  tag:"mo", output:"\u2265", tex:"ge", ttype:CONST},
{input:"geq", tag:"mo", output:"\u2265", tex:null, ttype:CONST},
{input:"-<",  tag:"mo", output:"\u227A", tex:"prec", ttype:CONST},
{input:"-lt", tag:"mo", output:"\u227A", tex:null, ttype:CONST},
{input:">-",  tag:"mo", output:"\u227B", tex:"succ", ttype:CONST},
{input:"-<=", tag:"mo", output:"\u2AAF", tex:"preceq", ttype:CONST},
{input:">-=", tag:"mo", output:"\u2AB0", tex:"succeq", ttype:CONST},
{input:"in",  tag:"mo", output:"\u2208", tex:null, ttype:CONST},
{input:"!in", tag:"mo", output:"\u2209", tex:"notin", ttype:CONST},
{input:"sub", tag:"mo", output:"\u2282", tex:"subset", ttype:CONST},
{input:"sup", tag:"mo", output:"\u2283", tex:"supset", ttype:CONST},
{input:"sube", tag:"mo", output:"\u2286", tex:"subseteq", ttype:CONST},
{input:"supe", tag:"mo", output:"\u2287", tex:"supseteq", ttype:CONST},
{input:"-=",  tag:"mo", output:"\u2261", tex:"equiv", ttype:CONST},
{input:"~=",  tag:"mo", output:"\u2245", tex:"stackrel{\\sim}{=}", ttype:CONST}, //back hack b/c mimetex doesn't support /cong
{input:"cong",   tag:"mo", output:"~=", tex:null, ttype:DEFINITION},
{input:"~~",  tag:"mo", output:"\u2248", tex:"approx", ttype:CONST},
{input:"prop", tag:"mo", output:"\u221D", tex:"propto", ttype:CONST},

//logical symbols
{input:"and", tag:"mtext", output:"and", tex:null, ttype:SPACE},
{input:"or",  tag:"mtext", output:"or",  tex:null, ttype:SPACE},
{input:"not", tag:"mo", output:"\u00AC", tex:"neg", ttype:CONST},
{input:"=>",  tag:"mo", output:"\u21D2", tex:"Rightarrow", ttype:CONST},
{input:"implies",   tag:"mo", output:"=>", tex:null, ttype:DEFINITION},
{input:"if",  tag:"mo", output:"if",     tex:null, ttype:SPACE},
{input:"<=>", tag:"mo", output:"\u21D4", tex:"Leftrightarrow", ttype:CONST},
{input:"iff",   tag:"mo", output:"<=>", tex:null, ttype:DEFINITION},
{input:"AA",  tag:"mo", output:"\u2200", tex:"forall", ttype:CONST},
{input:"EE",  tag:"mo", output:"\u2203", tex:"exists", ttype:CONST},
{input:"_|_", tag:"mo", output:"\u22A5", tex:"bot", ttype:CONST},
{input:"TT",  tag:"mo", output:"\u22A4", tex:"top", ttype:CONST},
{input:"|--",  tag:"mo", output:"\u22A2", tex:"vdash", ttype:CONST},
{input:"|==",  tag:"mo", output:"\u22A8", tex:"models", ttype:CONST}, //mimetex doesn't support

//grouping brackets
{input:"(", tag:"mo", output:"(", tex:null, ttype:LEFTBRACKET},
{input:")", tag:"mo", output:")", tex:null, ttype:RIGHTBRACKET},
{input:"[", tag:"mo", output:"[", tex:null, ttype:LEFTBRACKET},
{input:"]", tag:"mo", output:"]", tex:null, ttype:RIGHTBRACKET},
{input:"{", tag:"mo", output:"{", tex:"lbrace", ttype:LEFTBRACKET},
{input:"}", tag:"mo", output:"}", tex:"rbrace", ttype:RIGHTBRACKET},
{input:"|", tag:"mo", output:"|", tex:null, ttype:LEFTRIGHT},
//{input:"||", tag:"mo", output:"||", tex:null, ttype:LEFTRIGHT},
{input:"(:", tag:"mo", output:"\u2329", tex:"langle", ttype:LEFTBRACKET},
{input:":)", tag:"mo", output:"\u232A", tex:"rangle", ttype:RIGHTBRACKET},
{input:"<<", tag:"mo", output:"\u2329", tex:"langle", ttype:LEFTBRACKET},
{input:">>", tag:"mo", output:"\u232A", tex:"rangle", ttype:RIGHTBRACKET},
{input:"{:", tag:"mo", output:"{:", tex:null, ttype:LEFTBRACKET, invisible:true},
{input:":}", tag:"mo", output:":}", tex:null, ttype:RIGHTBRACKET, invisible:true},

//miscellaneous symbols
{input:"int",  tag:"mo", output:"\u222B", tex:null, ttype:CONST},
{input:"dx",   tag:"mi", output:"{:d x:}", tex:null, ttype:DEFINITION},
{input:"dy",   tag:"mi", output:"{:d y:}", tex:null, ttype:DEFINITION},
{input:"dz",   tag:"mi", output:"{:d z:}", tex:null, ttype:DEFINITION},
{input:"dt",   tag:"mi", output:"{:d t:}", tex:null, ttype:DEFINITION},
{input:"oint", tag:"mo", output:"\u222E", tex:null, ttype:CONST},
{input:"del",  tag:"mo", output:"\u2202", tex:"partial", ttype:CONST},
{input:"grad", tag:"mo", output:"\u2207", tex:"nabla", ttype:CONST},
{input:"+-",   tag:"mo", output:"\u00B1", tex:"pm", ttype:CONST},
{input:"O/",   tag:"mo", output:"\u2205", tex:"emptyset", ttype:CONST},
{input:"oo",   tag:"mo", output:"\u221E", tex:"infty", ttype:CONST},
{input:"aleph", tag:"mo", output:"\u2135", tex:null, ttype:CONST},
{input:"...",  tag:"mo", output:"...",    tex:"ldots", ttype:CONST},
{input:":.",  tag:"mo", output:"\u2234",  tex:"therefore", ttype:CONST},
{input:"/_",  tag:"mo", output:"\u2220",  tex:"angle", ttype:CONST},
{input:"\\ ",  tag:"mo", output:"\u00A0", tex:null, ttype:CONST, val:true},
{input:"quad", tag:"mo", output:"\u00A0\u00A0", tex:null, ttype:CONST},
{input:"qquad", tag:"mo", output:"\u00A0\u00A0\u00A0\u00A0", tex:null, ttype:CONST},
{input:"cdots", tag:"mo", output:"\u22EF", tex:null, ttype:CONST},
{input:"vdots", tag:"mo", output:"\u22EE", tex:null, ttype:CONST},
{input:"ddots", tag:"mo", output:"\u22F1", tex:null, ttype:CONST},
{input:"diamond", tag:"mo", output:"\u22C4", tex:null, ttype:CONST},
{input:"square", tag:"mo", output:"\u25A1", tex:"boxempty", ttype:CONST},
{input:"|__", tag:"mo", output:"\u230A",  tex:"lfloor", ttype:CONST},
{input:"__|", tag:"mo", output:"\u230B",  tex:"rfloor", ttype:CONST},
{input:"|~", tag:"mo", output:"\u2308",  tex:"lceil", ttype:CONST},
{input:"lceiling",   tag:"mo", output:"|~", tex:null, ttype:DEFINITION},
{input:"~|", tag:"mo", output:"\u2309",  tex:"rceil", ttype:CONST},
{input:"rceiling",   tag:"mo", output:"~|", tex:null, ttype:DEFINITION},
{input:"CC",  tag:"mo", output:"\u2102", tex:"mathbb{C}", ttype:CONST, notexcopy:true},
{input:"NN",  tag:"mo", output:"\u2115", tex:"mathbb{N}", ttype:CONST, notexcopy:true},
{input:"QQ",  tag:"mo", output:"\u211A", tex:"mathbb{Q}", ttype:CONST, notexcopy:true},
{input:"RR",  tag:"mo", output:"\u211D", tex:"mathbb{R}", ttype:CONST, notexcopy:true},
{input:"ZZ",  tag:"mo", output:"\u2124", tex:"mathbb{Z}", ttype:CONST, notexcopy:true},
{input:"f",   tag:"mi", output:"f",      tex:null, ttype:UNARY, func:true, val:true},
{input:"g",   tag:"mi", output:"g",      tex:null, ttype:UNARY, func:true, val:true},
{input:"'",  tag:"mo", output:"\u2032", tex:null, ttype:CONST, notexcopy:true, val:true}, 
{input:"''",  tag:"mo", output:"\u2032\u2032", tex:null, ttype:CONST, notexcopy:true, val:true},
{input:"'''",  tag:"mo", output:"\u2032\u2032\u2032", tex:null, ttype:CONST, notexcopy:true, val:true},
{input:"''''",  tag:"mo", output:"\u2032\u2032\u2032\u2032", tex:null, ttype:CONST, notexcopy:true, val:true},

//standard functions
{input:"lim",  tag:"mo", output:"lim", tex:null, ttype:UNDEROVER},
{input:"Lim",  tag:"mo", output:"Lim", tex:null, ttype:UNDEROVER},
{input:"sin",  tag:"mo", output:"sin", tex:null, ttype:UNARY, func:true},
{input:"cos",  tag:"mo", output:"cos", tex:null, ttype:UNARY, func:true},
{input:"tan",  tag:"mo", output:"tan", tex:null, ttype:UNARY, func:true},
{input:"arcsin",  tag:"mo", output:"arcsin", tex:null, ttype:UNARY, func:true},
{input:"arccos",  tag:"mo", output:"arccos", tex:null, ttype:UNARY, func:true},
{input:"arctan",  tag:"mo", output:"arctan", tex:null, ttype:UNARY, func:true},
{input:"sinh", tag:"mo", output:"sinh", tex:null, ttype:UNARY, func:true},
{input:"cosh", tag:"mo", output:"cosh", tex:null, ttype:UNARY, func:true},
{input:"tanh", tag:"mo", output:"tanh", tex:null, ttype:UNARY, func:true},
{input:"coth",  tag:"mo", output:"coth", tex:null, ttype:UNARY, func:true},
{input:"sech",  tag:"mo", output:"sech", tex:null, ttype:UNARY, func:true},
{input:"csch",  tag:"mo", output:"csch", tex:null, ttype:UNARY, func:true},
{input:"cot",  tag:"mo", output:"cot", tex:null, ttype:UNARY, func:true},
{input:"sec",  tag:"mo", output:"sec", tex:null, ttype:UNARY, func:true},
{input:"csc",  tag:"mo", output:"csc", tex:null, ttype:UNARY, func:true},
{input:"log",  tag:"mo", output:"log", tex:null, ttype:UNARY, func:true},
{input:"ln",   tag:"mo", output:"ln",  tex:null, ttype:UNARY, func:true},
{input:"abs",   tag:"mo", output:"abs",  tex:null, ttype:UNARY, func:true},
{input:"det",  tag:"mo", output:"det", tex:null, ttype:UNARY, func:true},
{input:"dim",  tag:"mo", output:"dim", tex:null, ttype:CONST},
{input:"mod",  tag:"mo", output:"mod", tex:"text{mod}", ttype:CONST},
{input:"gcd",  tag:"mo", output:"gcd", tex:null, ttype:UNARY, func:true},
{input:"lcm",  tag:"mo", output:"lcm", tex:"text{lcm}", ttype:UNARY, func:true},
{input:"lub",  tag:"mo", output:"lub", tex:null, ttype:CONST},
{input:"glb",  tag:"mo", output:"glb", tex:null, ttype:CONST},
{input:"min",  tag:"mo", output:"min", tex:null, ttype:UNDEROVER},
{input:"max",  tag:"mo", output:"max", tex:null, ttype:UNDEROVER},

//arrows
{input:"uarr", tag:"mo", output:"\u2191", tex:"uparrow", ttype:CONST},
{input:"darr", tag:"mo", output:"\u2193", tex:"downarrow", ttype:CONST},
{input:"rarr", tag:"mo", output:"\u2192", tex:"rightarrow", ttype:CONST},
{input:"->",   tag:"mo", output:"\u2192", tex:"to", ttype:CONST},
{input:"|->",  tag:"mo", output:"\u21A6", tex:"mapsto", ttype:CONST},
{input:"larr", tag:"mo", output:"\u2190", tex:"leftarrow", ttype:CONST},
{input:"harr", tag:"mo", output:"\u2194", tex:"leftrightarrow", ttype:CONST},
{input:"rArr", tag:"mo", output:"\u21D2", tex:"Rightarrow", ttype:CONST},
{input:"lArr", tag:"mo", output:"\u21D0", tex:"Leftarrow", ttype:CONST},
{input:"hArr", tag:"mo", output:"\u21D4", tex:"Leftrightarrow", ttype:CONST},

//commands with argument
AMsqrt, AMroot, AMfrac, AMdiv, AMover, AMsub, AMsup,
{input:"hat", tag:"mover", output:"\u005E", tex:null, ttype:UNARY, acc:true},
{input:"bar", tag:"mover", output:"\u00AF", tex:"overline", ttype:UNARY, acc:true},
{input:"vec", tag:"mover", output:"\u2192", tex:null, ttype:UNARY, acc:true},
{input:"dot", tag:"mover", output:".",      tex:null, ttype:UNARY, acc:true},
{input:"ddot", tag:"mover", output:"..",    tex:null, ttype:UNARY, acc:true},
{input:"ul", tag:"munder", output:"\u0332", tex:"underline", ttype:UNARY, acc:true},
AMtext, AMmbox, AMquote,
{input:"bb", tag:"mstyle", atname:"fontweight", atval:"bold", output:"bb", tex:"mathbf", ttype:UNARY, notexcopy:true},
{input:"mathbf", tag:"mstyle", atname:"fontweight", atval:"bold", output:"mathbf", tex:null, ttype:UNARY},
{input:"sf", tag:"mstyle", atname:"fontfamily", atval:"sans-serif", output:"sf", tex:"mathsf", ttype:UNARY, notexcopy:true},
{input:"mathsf", tag:"mstyle", atname:"fontfamily", atval:"sans-serif", output:"mathsf", tex:null, ttype:UNARY},
{input:"bbb", tag:"mstyle", atname:"mathvariant", atval:"double-struck", output:"bbb", tex:"mathbb", ttype:UNARY, codes:AMbbb, notexcopy:true},
{input:"mathbb", tag:"mstyle", atname:"mathvariant", atval:"double-struck", output:"mathbb", tex:null, ttype:UNARY, codes:AMbbb},
{input:"cc",  tag:"mstyle", atname:"mathvariant", atval:"script", output:"cc", tex:"mathcal", ttype:UNARY, codes:AMcal, notexcopy:true},
{input:"mathcal", tag:"mstyle", atname:"mathvariant", atval:"script", output:"mathcal", tex:null, ttype:UNARY, codes:AMcal},
{input:"tt",  tag:"mstyle", atname:"fontfamily", atval:"monospace", output:"tt", tex:"mathtt", ttype:UNARY, notexcopy:true},
{input:"mathtt", tag:"mstyle", atname:"fontfamily", atval:"monospace", output:"mathtt", tex:null, ttype:UNARY},
{input:"fr",  tag:"mstyle", atname:"mathvariant", atval:"fraktur", output:"fr", tex:"mathfrak", ttype:UNARY, codes:AMfrk, notexcopy:true},
{input:"mathfrak",  tag:"mstyle", atname:"mathvariant", atval:"fraktur", output:"mathfrak", tex:null, ttype:UNARY, codes:AMfrk}
];

function compareNames(s1,s2) {
  if (s1.input > s2.input) return 1
  else return -1;
}

var AMnames = []; //list of input symbols

function AMinitSymbols() {
  var texsymbols = [], i;
  for (i=0; i<AMsymbols.length; i++)
    if (AMsymbols[i].tex && !(typeof AMsymbols[i].notexcopy == "boolean" && AMsymbols[i].notexcopy)) 
      texsymbols[texsymbols.length] = {input:AMsymbols[i].tex, 
        tag:AMsymbols[i].tag, output:AMsymbols[i].output, ttype:AMsymbols[i].ttype};
  AMsymbols = AMsymbols.concat(texsymbols);
  AMsymbols.sort(compareNames);
  for (i=0; i<AMsymbols.length; i++) AMnames[i] = AMsymbols[i].input;
}

var AMmathml = "http://www.w3.org/1998/Math/MathML";

function AMcreateElementMathML(t) {
  if (isIE) return document.createElement("m:"+t);
  else return document.createElementNS(AMmathml,t);
}

function AMcreateMmlNode(t,frag) {
//  var node = AMcreateElementMathML(name);
  if (isIE) var node = document.createElement("m:"+t);
  else var node = document.createElementNS(AMmathml,t);
  node.appendChild(frag);
  return node;
}

function newcommand(oldstr,newstr) {
  AMsymbols = AMsymbols.concat([{input:oldstr, tag:"mo", output:newstr, 
                                 tex:null, ttype:DEFINITION}]);
}

function AMremoveCharsAndBlanks(str,n) {
//remove n characters and any following blanks
  var st;
  if (str.charAt(n)=="\\" && str.charAt(n+1)!="\\" && str.charAt(n+1)!=" ") 
    st = str.slice(n+1);
  else st = str.slice(n);
  for (var i=0; i<st.length && st.charCodeAt(i)<=32; i=i+1);
  return st.slice(i);
}

function AMposition(arr, str, n) { 
// return position >=n where str appears or would be inserted
// assumes arr is sorted
  if (n==0) {
    var h,m;
    n = -1;
    h = arr.length;
    while (n+1<h) {
      m = (n+h) >> 1;
      if (arr[m]<str) n = m; else h = m;
    }
    return h;
  } else
    for (var i=n; i<arr.length && arr[i]<str; i++);
  return i; // i=arr.length || arr[i]>=str
}

function AMgetSymbol(str) {
//return maximal initial substring of str that appears in names
//return null if there is none
  var k = 0; //new pos
  var j = 0; //old pos
  var mk; //match pos
  var st;
  var tagst;
  var match = "";
  var more = true;
  for (var i=1; i<=str.length && more; i++) {
    st = str.slice(0,i); //initial substring of length i
    j = k;
    k = AMposition(AMnames, st, j);
    if (k<AMnames.length && str.slice(0,AMnames[k].length)==AMnames[k]){
      match = AMnames[k];
      mk = k;
      i = match.length;
    }
    more = k<AMnames.length && str.slice(0,AMnames[k].length)>=AMnames[k];
  }
  AMpreviousSymbol=AMcurrentSymbol;
  if (match!=""){
    AMcurrentSymbol=AMsymbols[mk].ttype;
    return AMsymbols[mk]; 
  }
// if str[0] is a digit or - return maxsubstring of digits.digits
  AMcurrentSymbol=CONST;
  k = 1;
  st = str.slice(0,1);
  var integ = true;
 	  
  while ("0"<=st && st<="9" && k<=str.length) {
    st = str.slice(k,k+1);
    k++;
  }
  if (st == decimalsign) {
    st = str.slice(k,k+1);
    if ("0"<=st && st<="9") {
      integ = false;
      k++;
      while ("0"<=st && st<="9" && k<=str.length) {
        st = str.slice(k,k+1);
        k++;
      }
    }
  }
  if ((integ && k>1) || k>2) {
    st = str.slice(0,k-1);
    tagst = "mn";
  } else {
    k = 2;
    st = str.slice(0,1); //take 1 character
    tagst = (("A">st || st>"Z") && ("a">st || st>"z")?"mo":"mi");
  }
  if (st=="-" && AMpreviousSymbol==INFIX) {
    AMcurrentSymbol = INFIX;
    return {input:st, tag:tagst, output:st, ttype:UNARY, func:true, val:true};
  }
  return {input:st, tag:tagst, output:st, ttype:CONST, val:true}; //added val bit
}

//TeX conversion version
function AMTremoveBrackets(node) {
	
  var st;
  if (node.charAt(0)=='{' && node.charAt(node.length-1)=='}') {

    st = node.charAt(1);
    if (st=="(" || st=="[") node = '{'+node.substr(2);
    st = node.substr(1,6);
    if (st=="\\left(" || st=="\\left[" || st=="\\left{") node = '{'+node.substr(7);
    st = node.substr(1,12);
    if (st=="\\left\\lbrace" || st=="\\left\\langle") node = '{'+node.substr(13);
    st = node.charAt(node.length-2);
    if (st==")" || st=="]") node = node.substr(0,node.length-8)+'}';
    st = node.substr(node.length-8,7)
    if (st=="\\rbrace" || st=="\\rangle") node = node.substr(0,node.length-14) + '}';
    
  } 
  return node;
}

//MathML version
function AMremoveBrackets(node) {
  var st;
  if (node.nodeName=="mrow") {
    st = node.firstChild.firstChild.nodeValue;
    if (st=="(" || st=="[" || st=="{") node.removeChild(node.firstChild);
  }
  if (node.nodeName=="mrow") {
    st = node.lastChild.firstChild.nodeValue;
    if (st==")" || st=="]" || st=="}") node.removeChild(node.lastChild);
  }
}

/*Parsing ASCII math expressions with the following grammar
v ::= [A-Za-z] | greek letters | numbers | other constant symbols
u ::= sqrt | text | bb | other unary symbols for font commands
b ::= frac | root | stackrel         binary symbols
l ::= ( | [ | { | (: | {:            left brackets
r ::= ) | ] | } | :) | :}            right brackets
S ::= v | lEr | uS | bSS             Simple expression
I ::= S_S | S^S | S_S^S | S          Intermediate expression
E ::= IE | I/I                       Expression
Each terminal symbol is translated into a corresponding mathml node.*/

var AMnestingDepth,AMpreviousSymbol,AMcurrentSymbol;

function AMTgetTeXsymbol(symb) {
	if (typeof symb.val == "boolean" && symb.val) {
		pre = '';
	} else {
		pre = '\\';
	}
	if (symb.tex==null) {
		return (pre+symb.input);
	} else {
		return (pre+symb.tex);
	}
}
function AMTgetTeXbracket(symb) {
	if (symb.tex==null) {
		return (symb.input);
	} else {
		return ('\\'+symb.tex);
	}
}

function AMTparseSexpr(str) { //parses str and returns [node,tailstr]
  var symbol, node, result, i, st,// rightvert = false,
    newFrag = '';
  str = AMremoveCharsAndBlanks(str,0);
  symbol = AMgetSymbol(str);             //either a token or a bracket or empty
  if (symbol == null || symbol.ttype == RIGHTBRACKET && AMnestingDepth > 0) {
    return [null,str];
  }
  if (symbol.ttype == DEFINITION) {
    str = symbol.output+AMremoveCharsAndBlanks(str,symbol.input.length); 
    symbol = AMgetSymbol(str);
  }
  switch (symbol.ttype) {
  case UNDEROVER:
  case CONST:
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
     var texsymbol = AMTgetTeXsymbol(symbol);
     if (texsymbol.charAt(0)=="\\" || symbol.tag=="mo") return [texsymbol,str];
     else return ['{'+texsymbol+'}',str];
    
  case LEFTBRACKET:   //read (expr+)
    AMnestingDepth++;
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
   
    result = AMTparseExpr(str,true);
    AMnestingDepth--;
    if (typeof symbol.invisible == "boolean" && symbol.invisible) 
    	node = '{\\left.'+result[0]+'}';
    else {
	    node = '{\\left'+AMTgetTeXbracket(symbol) + result[0]+'}';
    }
    return [node,result[1]];
  case TEXT:
      if (symbol!=AMquote) str = AMremoveCharsAndBlanks(str,symbol.input.length);
      if (str.charAt(0)=="{") i=str.indexOf("}");
      else if (str.charAt(0)=="(") i=str.indexOf(")");
      else if (str.charAt(0)=="[") i=str.indexOf("]");
      else if (symbol==AMquote) i=str.slice(1).indexOf("\"")+1;
      else i = 0;
      if (i==-1) i = str.length;
      st = str.slice(1,i);
      if (st.charAt(0) == " ") {
	      newFrag = '\\ ';
      }
     newFrag += '\\text{'+st+'}';
      if (st.charAt(st.length-1) == " ") {
	      newFrag += '\\ ';
      }
      str = AMremoveCharsAndBlanks(str,i+1);
      return [newFrag,str];
  case UNARY:
      str = AMremoveCharsAndBlanks(str,symbol.input.length); 
      result = AMTparseSexpr(str);
      if (result[0]==null) return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
      if (typeof symbol.func == "boolean" && symbol.func) { // functions hack
        st = str.charAt(0);
        if (st=="^" || st=="_" || st=="/" || st=="|" || st==",") {
          return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
        } else {
		node = '{'+AMTgetTeXsymbol(symbol)+'{'+result[0]+'}}';
		return [node,result[1]];
        }
      }
      result[0] = AMTremoveBrackets(result[0]);
      if (symbol.input == "sqrt") {           // sqrt
	      return ['\\sqrt{'+result[0]+'}',result[1]];
      } else if (typeof symbol.acc == "boolean" && symbol.acc) {   // accent
	      return ['{'+AMTgetTeXsymbol(symbol)+'{'+result[0]+'}}',result[1]];
      } else {                        // font change command  
	    return ['{'+AMTgetTeXsymbol(symbol)+'{'+result[0]+'}}',result[1]];
      }
  case BINARY:
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    result = AMTparseSexpr(str);
    if (result[0]==null) return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
    result[0] = AMTremoveBrackets(result[0]);
    var result2 = AMTparseSexpr(result[1]);
    if (result2[0]==null) return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
    result2[0] = AMTremoveBrackets(result2[0]);
    if (symbol.input=="root" || symbol.input=="stackrel") {
	    if (symbol.input=="root") {
		    newFrag = '{\\sqrt['+result[0]+']{'+result2[0]+'}}';
	    } else {
		    newFrag = '{'+AMTgetTeXsymbol(symbol)+'{'+result[0]+'}{'+result2[0]+'}}';
	    }
    }
    if (symbol.input=="frac") {
	    newFrag = '{\\frac{'+result[0]+'}{'+result2[0]+'}}';
    }
    return [newFrag,result2[1]];
  case INFIX:
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    return [symbol.output,str];
  case SPACE:
    str = AMremoveCharsAndBlanks(str,symbol.input.length);
    return ['{\\quad\\text{'+symbol.input+'}\\quad}',str];
  case LEFTRIGHT:
//    if (rightvert) return [null,str]; else rightvert = true;
    AMnestingDepth++;
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    result = AMTparseExpr(str,false);
    AMnestingDepth--;
    var st = "";
    st = result[0].charAt(result[0].length -1);
//alert(result[0].lastChild+"***"+st);
    if (st == "|") { // its an absolute value subterm
	    node = '{\\left|'+result[0]+'}';
      return [node,result[1]];
    } else { // the "|" is a \mid
      node = '{\\mid}';
      return [node,str];
    }
   
  default:
//alert("default");
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
  }
}

function AMTparseIexpr(str) {
  var symbol, sym1, sym2, node, result, underover;
  str = AMremoveCharsAndBlanks(str,0);
  sym1 = AMgetSymbol(str);
  result = AMTparseSexpr(str);
  node = result[0];
  str = result[1];
  symbol = AMgetSymbol(str);
  if (symbol.ttype == INFIX && symbol.input != "/") {
    str = AMremoveCharsAndBlanks(str,symbol.input.length);
   // if (symbol.input == "/") result = AMTparseIexpr(str); else 
    result = AMTparseSexpr(str);
    if (result[0] == null) // show box in place of missing argument
	    result[0] = '{}';
    else result[0] = AMTremoveBrackets(result[0]);
    str = result[1];
//    if (symbol.input == "/") AMTremoveBrackets(node);
    if (symbol.input == "_") {
      sym2 = AMgetSymbol(str);
      underover = (sym1.ttype == UNDEROVER);
      if (sym2.input == "^") {
        str = AMremoveCharsAndBlanks(str,sym2.input.length);
        var res2 = AMTparseSexpr(str);
        res2[0] = AMTremoveBrackets(res2[0]);
        str = res2[1];
        node = '{' + node;
       	node += '_{'+result[0]+'}';
	node += '^{'+res2[0]+'}';
        node += '}';
      } else {
        node += '_{'+result[0]+'}';
      }
    } else { //must be ^
      node = '{'+node+'}^{'+result[0]+'}';
    }
  } 
  
  return [node,str];
}

function AMTparseExpr(str,rightbracket) {
  var symbol, node, result, i, nodeList = [],
  newFrag = '';
  var addedright = false;
  do {
    str = AMremoveCharsAndBlanks(str,0);
    result = AMTparseIexpr(str);
    node = result[0];
    str = result[1];
    symbol = AMgetSymbol(str);
    if (symbol.ttype == INFIX && symbol.input == "/") {
      str = AMremoveCharsAndBlanks(str,symbol.input.length);
      result = AMTparseIexpr(str);
      
      if (result[0] == null) // show box in place of missing argument
	      result[0] = '{}';
      else result[0] = AMTremoveBrackets(result[0]);
      str = result[1];
      node = AMTremoveBrackets(node);
      node = '\\frac' + '{'+ node + '}';
      node += '{'+result[0]+'}';
      newFrag += node;
      symbol = AMgetSymbol(str);
    }  else if (node!=undefined) newFrag += node;
  } while ((symbol.ttype != RIGHTBRACKET && 
           (symbol.ttype != LEFTRIGHT || rightbracket)
           || AMnestingDepth == 0) && symbol!=null && symbol.output!="");
  if (symbol.ttype == RIGHTBRACKET || symbol.ttype == LEFTRIGHT) {
//    if (AMnestingDepth > 0) AMnestingDepth--;
	var len = newFrag.length;
	if (len>2 && newFrag.charAt(0)=='{' && newFrag.indexOf(',')>0) { //could be matrix (total rewrite from .js)
		var right = newFrag.charAt(len - 2);
		if (right==')' || right==']') {
			var left = newFrag.charAt(6);
			if ((left=='(' && right==')' && symbol.output != '}') || (left=='[' && right==']')) {
				var mxout = '\\matrix{';
				var pos = new Array(); //position of commas
				pos.push(0);
				var matrix = true;
				var mxnestingd = 0;
				for (i=1; i<len-1; i++) {
					if (newFrag.charAt(i)==left) mxnestingd++;
					if (newFrag.charAt(i)==right) {
						mxnestingd--;
						if (mxnestingd==0 && newFrag.charAt(i+2)==',' && newFrag.charAt(i+3)=='{') pos.push(i+2);
					}
				}
				pos.push(len);
				var lastmxsubcnt = -1;
				if (mxnestingd==0 && pos.length>0) {
					for (i=0;i<pos.length-1;i++) {
						if (i>0) mxout += '\\\\';
						if (i==0) {
							var subarr = newFrag.substr(pos[i]+7,pos[i+1]-pos[i]-15).split(',');
						} else {
							var subarr = newFrag.substr(pos[i]+8,pos[i+1]-pos[i]-16).split(',');
						}
						if (lastmxsubcnt>0 && subarr.length!=lastmxsubcnt) {
							matrix = false;
						} else if (lastmxsubcnt==-1) {
							lastmxsubcnt=subarr.length;
						}
						mxout += subarr.join('&');
					}
				}
				mxout += '}';
				if (matrix) { newFrag = mxout;}
			}
		}
	}
    
    str = AMremoveCharsAndBlanks(str,symbol.input.length);
    if (typeof symbol.invisible != "boolean" || !symbol.invisible) {
      node = '\\right'+AMTgetTeXbracket(symbol); //AMcreateMmlNode("mo",document.createTextNode(symbol.output));
      newFrag += node;
      addedright = true;
    } else {
	    newFrag += '\\right.';
	    addedright = true;
    }
   
  }
  if(AMnestingDepth>0 && !addedright) {
	  newFrag += '\\right.'; //adjust for non-matching left brackets
	  //todo: adjust for non-matching right brackets
  }
  
  return [newFrag,str];
}

function AMTparseAMtoTeX(str) {
	//DLMOD to remove &nbsp;, which editor adds on multiple spaces
  AMnestingDepth = 0;
  str = str.replace(/&nbsp;/g,"");
  str = str.replace(/&gt;/g,">");
  str = str.replace(/&lt;/g,"<");
  return AMTparseExpr(str.replace(/^\s+/g,""),false)[0];
}

function AMTparseMath(str) {
  var r = new RegExp('(\\u00a0|&#160;|&nbsp;)', 'gi');
  str = str.replace(r,"");
  // = str.replace(/&nbsp;/g,"");
  str = str.replace(/&gt;/g,">");
  str = str.replace(/&lt;/g,"<");
  if (str.match(/\S/)==null) {
	  return document.createTextNode(" ");
  }
  var texstring = AMTparseAMtoTeX(str);
  if (mathcolor!="") {
	  texstring = "\\"+mathcolor + texstring;
  }
  if (displaystyle) {
	  texstring = "\\displaystyle" + texstring;
  } else {
	  texstring = "\\textstyle" + texstring;
  }
  var node = AMcreateElementXHTML("img");
  if (typeof encodeURIComponent == "function") {
	  texstring = encodeURIComponent(texstring);
  } else {
	  texstring = escape(texstring);
  }
  node.src = AMTcgiloc + '?' + texstring;
  node.style.verticalAlign = "middle";
  if (showasciiformulaonhover)                      //fixed by djhsu so newline
    node.setAttribute("title",str.replace(/\s+/g," "));//does not show in Gecko
 
  return node;
}

function AMparseSexpr(str) { //parses str and returns [node,tailstr]
  var symbol, node, result, i, st,// rightvert = false,
    newFrag = document.createDocumentFragment();
  str = AMremoveCharsAndBlanks(str,0);
  symbol = AMgetSymbol(str);             //either a token or a bracket or empty
  if (symbol == null || symbol.ttype == RIGHTBRACKET && AMnestingDepth > 0) {
    return [null,str];
  }
  if (symbol.ttype == DEFINITION) {
    str = symbol.output+AMremoveCharsAndBlanks(str,symbol.input.length); 
    symbol = AMgetSymbol(str);
  }
  switch (symbol.ttype) {
  case UNDEROVER:
  case CONST:
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    return [AMcreateMmlNode(symbol.tag,        //its a constant
                             document.createTextNode(symbol.output)),str];
  case LEFTBRACKET:   //read (expr+)
    AMnestingDepth++;
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    result = AMparseExpr(str,true);
    AMnestingDepth--;
    if (typeof symbol.invisible == "boolean" && symbol.invisible) 
      node = AMcreateMmlNode("mrow",result[0]);
    else {
      node = AMcreateMmlNode("mo",document.createTextNode(symbol.output));
      node = AMcreateMmlNode("mrow",node);
      node.appendChild(result[0]);
    }
    return [node,result[1]];
  case TEXT:
      if (symbol!=AMquote) str = AMremoveCharsAndBlanks(str,symbol.input.length);
      if (str.charAt(0)=="{") i=str.indexOf("}");
      else if (str.charAt(0)=="(") i=str.indexOf(")");
      else if (str.charAt(0)=="[") i=str.indexOf("]");
      else if (symbol==AMquote) i=str.slice(1).indexOf("\"")+1;
      else i = 0;
      if (i==-1) i = str.length;
      st = str.slice(1,i);
      if (st.charAt(0) == " ") {
        node = AMcreateElementMathML("mspace");
        node.setAttribute("width","1ex");
        newFrag.appendChild(node);
      }
      newFrag.appendChild(
        AMcreateMmlNode(symbol.tag,document.createTextNode(st)));
      if (st.charAt(st.length-1) == " ") {
        node = AMcreateElementMathML("mspace");
        node.setAttribute("width","1ex");
        newFrag.appendChild(node);
      }
      str = AMremoveCharsAndBlanks(str,i+1);
      return [AMcreateMmlNode("mrow",newFrag),str];
  case UNARY:
      str = AMremoveCharsAndBlanks(str,symbol.input.length); 
      result = AMparseSexpr(str);
      if (result[0]==null) return [AMcreateMmlNode(symbol.tag,
                             document.createTextNode(symbol.output)),str];
      if (typeof symbol.func == "boolean" && symbol.func) { // functions hack
        st = str.charAt(0);
        if (st=="^" || st=="_" || st=="/" || st=="|" || st==",") {
          return [AMcreateMmlNode(symbol.tag,
                    document.createTextNode(symbol.output)),str];
        } else {
          node = AMcreateMmlNode("mrow",
           AMcreateMmlNode(symbol.tag,document.createTextNode(symbol.output)));
          node.appendChild(result[0]);
          return [node,result[1]];
        }
      }
      AMremoveBrackets(result[0]);
      if (symbol.input == "sqrt") {           // sqrt
        return [AMcreateMmlNode(symbol.tag,result[0]),result[1]];
      } else if (typeof symbol.acc == "boolean" && symbol.acc) {   // accent
        node = AMcreateMmlNode(symbol.tag,result[0]);
        node.appendChild(AMcreateMmlNode("mo",document.createTextNode(symbol.output)));
        return [node,result[1]];
      } else {                        // font change command
        if (!isIE && typeof symbol.codes != "undefined") {
          for (i=0; i<result[0].childNodes.length; i++)
            if (result[0].childNodes[i].nodeName=="mi" || result[0].nodeName=="mi") {
              st = (result[0].nodeName=="mi"?result[0].firstChild.nodeValue:
                              result[0].childNodes[i].firstChild.nodeValue);
              var newst = [];
              for (var j=0; j<st.length; j++)
                if (st.charCodeAt(j)>64 && st.charCodeAt(j)<91) newst = newst +
                  String.fromCharCode(symbol.codes[st.charCodeAt(j)-65]);
                else newst = newst + st.charAt(j);
              if (result[0].nodeName=="mi")
                result[0]=AMcreateElementMathML("mo").
                          appendChild(document.createTextNode(newst));
              else result[0].replaceChild(AMcreateElementMathML("mo").
          appendChild(document.createTextNode(newst)),result[0].childNodes[i]);
            }
        }
        node = AMcreateMmlNode(symbol.tag,result[0]);
        node.setAttribute(symbol.atname,symbol.atval);
        return [node,result[1]];
      }
  case BINARY:
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    result = AMparseSexpr(str);
    if (result[0]==null) return [AMcreateMmlNode("mo",
                           document.createTextNode(symbol.input)),str];
    AMremoveBrackets(result[0]);
    var result2 = AMparseSexpr(result[1]);
    if (result2[0]==null) return [AMcreateMmlNode("mo",
                           document.createTextNode(symbol.input)),str];
    AMremoveBrackets(result2[0]);
    if (symbol.input=="root" || symbol.input=="stackrel") 
      newFrag.appendChild(result2[0]);
    newFrag.appendChild(result[0]);
    if (symbol.input=="frac") newFrag.appendChild(result2[0]);
    return [AMcreateMmlNode(symbol.tag,newFrag),result2[1]];
  case INFIX:
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    return [AMcreateMmlNode("mo",document.createTextNode(symbol.output)),str];
  case SPACE:
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    node = AMcreateElementMathML("mspace");
    node.setAttribute("width","1ex");
    newFrag.appendChild(node);
    newFrag.appendChild(
      AMcreateMmlNode(symbol.tag,document.createTextNode(symbol.output)));
    node = AMcreateElementMathML("mspace");
    node.setAttribute("width","1ex");
    newFrag.appendChild(node);
    return [AMcreateMmlNode("mrow",newFrag),str];
  case LEFTRIGHT:
//    if (rightvert) return [null,str]; else rightvert = true;
    AMnestingDepth++;
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    result = AMparseExpr(str,false);
    AMnestingDepth--;
    var st = "";
    if (result[0].lastChild!=null)
      st = result[0].lastChild.firstChild.nodeValue;
//alert(result[0].lastChild+"***"+st);
    if (st == "|") { // its an absolute value subterm
      node = AMcreateMmlNode("mo",document.createTextNode(symbol.output));
      node = AMcreateMmlNode("mrow",node);
      node.appendChild(result[0]);
      return [node,result[1]];
    } else { // the "|" is a \mid
      node = AMcreateMmlNode("mo",document.createTextNode(symbol.output));
      node = AMcreateMmlNode("mrow",node);
      return [node,str];
    }
  default:
//alert("default");
    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
    return [AMcreateMmlNode(symbol.tag,        //its a constant
                             document.createTextNode(symbol.output)),str];
  }
}

function AMparseIexpr(str) {
  var symbol, sym1, sym2, node, result, underover;
  str = AMremoveCharsAndBlanks(str,0);
  sym1 = AMgetSymbol(str);
  result = AMparseSexpr(str);
  node = result[0];
  str = result[1];
  symbol = AMgetSymbol(str);
  if (symbol.ttype == INFIX && symbol.input != "/") {
    str = AMremoveCharsAndBlanks(str,symbol.input.length);
   // if (symbol.input == "/") result = AMparseIexpr(str); else 
    result = AMparseSexpr(str);
    if (result[0] == null) // show box in place of missing argument
      result[0] = AMcreateMmlNode("mo",document.createTextNode("\u25A1"));
    else AMremoveBrackets(result[0]);
    str = result[1];
//    if (symbol.input == "/") AMremoveBrackets(node);
    if (symbol.input == "_") {
      sym2 = AMgetSymbol(str);
      underover = (sym1.ttype == UNDEROVER);
      if (sym2.input == "^") {
        str = AMremoveCharsAndBlanks(str,sym2.input.length);
        var res2 = AMparseSexpr(str);
        AMremoveBrackets(res2[0]);
        str = res2[1];
        node = AMcreateMmlNode((underover?"munderover":"msubsup"),node);
        node.appendChild(result[0]);
        node.appendChild(res2[0]);
        node = AMcreateMmlNode("mrow",node); // so sum does not stretch
      } else {
        node = AMcreateMmlNode((underover?"munder":"msub"),node);
        node.appendChild(result[0]);
      }
    } else {
      node = AMcreateMmlNode(symbol.tag,node);
      node.appendChild(result[0]);
    }
  } 
  
  return [node,str];
}

function AMparseExpr(str,rightbracket) {
  var symbol, node, result, i, nodeList = [],
  newFrag = document.createDocumentFragment();
  do {
    str = AMremoveCharsAndBlanks(str,0);
    result = AMparseIexpr(str);
    node = result[0];
    str = result[1];
    symbol = AMgetSymbol(str);
    if (symbol.ttype == INFIX && symbol.input == "/") {
      str = AMremoveCharsAndBlanks(str,symbol.input.length);
      result = AMparseIexpr(str);
      if (result[0] == null) // show box in place of missing argument
        result[0] = AMcreateMmlNode("mo",document.createTextNode("\u25A1"));
      else AMremoveBrackets(result[0]);
      str = result[1];
      AMremoveBrackets(node);
      node = AMcreateMmlNode(symbol.tag,node);
      node.appendChild(result[0]);
      newFrag.appendChild(node);
      symbol = AMgetSymbol(str);
    } 
    else if (node!=undefined) newFrag.appendChild(node);
  } while ((symbol.ttype != RIGHTBRACKET && 
           (symbol.ttype != LEFTRIGHT || rightbracket)
           || AMnestingDepth == 0) && symbol!=null && symbol.output!="");
  if (symbol.ttype == RIGHTBRACKET || symbol.ttype == LEFTRIGHT) {
//    if (AMnestingDepth > 0) AMnestingDepth--;
    var len = newFrag.childNodes.length;
    if (len>0 && newFrag.childNodes[len-1].nodeName == "mrow" && len>1 &&
      newFrag.childNodes[len-2].nodeName == "mo" &&
      newFrag.childNodes[len-2].firstChild.nodeValue == ",") { //matrix
      var right = newFrag.childNodes[len-1].lastChild.firstChild.nodeValue;
      if (right==")" || right=="]") {
        var left = newFrag.childNodes[len-1].firstChild.firstChild.nodeValue;
        if (left=="(" && right==")" && symbol.output != "}" || 
            left=="[" && right=="]") {
        var pos = []; // positions of commas
        var matrix = true;
        var m = newFrag.childNodes.length;
        for (i=0; matrix && i<m; i=i+2) {
          pos[i] = [];
          node = newFrag.childNodes[i];
          if (matrix) matrix = node.nodeName=="mrow" && 
            (i==m-1 || node.nextSibling.nodeName=="mo" && 
            node.nextSibling.firstChild.nodeValue==",")&&
            node.firstChild.firstChild.nodeValue==left &&
            node.lastChild.firstChild.nodeValue==right;
          if (matrix) 
            for (var j=0; j<node.childNodes.length; j++)
              if (node.childNodes[j].firstChild.nodeValue==",")
                pos[i][pos[i].length]=j;
          if (matrix && i>1) matrix = pos[i].length == pos[i-2].length;
        }
        if (matrix) {
          var row, frag, n, k, table = document.createDocumentFragment();
          for (i=0; i<m; i=i+2) {
            row = document.createDocumentFragment();
            frag = document.createDocumentFragment();
            node = newFrag.firstChild; // <mrow>(-,-,...,-,-)</mrow>
            n = node.childNodes.length;
            k = 0;
            node.removeChild(node.firstChild); //remove (
            for (j=1; j<n-1; j++) {
              if (typeof pos[i][k] != "undefined" && j==pos[i][k]){
                node.removeChild(node.firstChild); //remove ,
                row.appendChild(AMcreateMmlNode("mtd",frag));
                k++;
              } else frag.appendChild(node.firstChild);
            }
            row.appendChild(AMcreateMmlNode("mtd",frag));
            if (newFrag.childNodes.length>2) {
              newFrag.removeChild(newFrag.firstChild); //remove <mrow>)</mrow>
              newFrag.removeChild(newFrag.firstChild); //remove <mo>,</mo>
            }
            table.appendChild(AMcreateMmlNode("mtr",row));
          }
          node = AMcreateMmlNode("mtable",table);
          if (typeof symbol.invisible == "boolean" && symbol.invisible) node.setAttribute("columnalign","left");
          newFrag.replaceChild(node,newFrag.firstChild);
        }
       }
      }
    }
    str = AMremoveCharsAndBlanks(str,symbol.input.length);
    if (typeof symbol.invisible != "boolean" || !symbol.invisible) {
      node = AMcreateMmlNode("mo",document.createTextNode(symbol.output));
      newFrag.appendChild(node);
    }
  }
  return [newFrag,str];
}

function AMparseMath(str) {
  var result, node = AMcreateElementMathML("mstyle");
  if (mathcolor != "") node.setAttribute("mathcolor",mathcolor);
  if (displaystyle) node.setAttribute("displaystyle","true");
  if (mathfontfamily != "") node.setAttribute("fontfamily",mathfontfamily);
  AMnestingDepth = 0;
  //DLMOD to remove &nbsp;, which editor adds on multiple spaces
  str = str.replace(/&nbsp;/g,"");
  str = str.replace(/&gt;/g,">");
  str = str.replace(/&lt;/g,"<");
  node.appendChild(AMparseExpr(str.replace(/^\s+/g,""),false)[0]);
  node = AMcreateMmlNode("math",node);
  if (showasciiformulaonhover)                      //fixed by djhsu so newline
    node.setAttribute("title",str.replace(/\s+/g," "));//does not show in Gecko
  if (mathfontfamily != "" && (isIE || mathfontfamily != "serif")) {
    var fnode = AMcreateElementXHTML("font");
    fnode.setAttribute("face",mathfontfamily);
    fnode.appendChild(node);
    return fnode;
  }
  return node;
}

function AMstrarr2docFrag(arr, linebreaks,usingMathML) {
  var newFrag=document.createDocumentFragment();
  var expr = false;
  for (var i=0; i<arr.length; i++) {
    if (expr && !usingMathML) newFrag.appendChild(AMTparseMath(arr[i]));
    else if (expr && usingMathML) newFrag.appendChild(AMparseMath(arr[i]));
    else {
      var arri = (linebreaks ? arr[i].split("\n\n") : [arr[i]]);
      newFrag.appendChild(AMcreateElementXHTML("span").
      appendChild(document.createTextNode(arri[0])));
      for (var j=1; j<arri.length; j++) {
        newFrag.appendChild(AMcreateElementXHTML("p"));
        newFrag.appendChild(AMcreateElementXHTML("span").
        appendChild(document.createTextNode(arri[j])));
      }
    }
    expr = !expr;
  }
  return newFrag;
}

function AMprocessNodeR(n, linebreaks) {
  var mtch, str, arr, frg, i;
  if (n.childNodes.length == 0) {
   if ((n.nodeType!=8 || linebreaks) &&
    n.parentNode.nodeName!="form" && n.parentNode.nodeName!="FORM" &&
    n.parentNode.nodeName!="textarea" && n.parentNode.nodeName!="TEXTAREA" &&
    n.parentNode.nodeName!="pre" && n.parentNode.nodeName!="PRE") {
    str = n.nodeValue;
    if (!(str == null)) {
      str = str.replace(/\r\n\r\n/g,"\n\n");
      if (doubleblankmathdelimiter) {
        str = str.replace(/\x20\x20\./g," "+AMdelimiter1+".");
        str = str.replace(/\x20\x20,/g," "+AMdelimiter1+",");
        str = str.replace(/\x20\x20/g," "+AMdelimiter1+" ");
      }
      str = str.replace(/\x20+/g," ");
      str = str.replace(/\s*\r\n/g," ");
      mtch = false;
      if (AMusedelimiter2) {
      str = str.replace(new RegExp(AMescape2, "g"),
              function(st){mtch=true;return "AMescape2"});
      }
      str = str.replace(new RegExp(AMescape1, "g"),
              function(st){mtch=true;return "AMescape1"});
     if (AMusedelimiter2)  str = str.replace(new RegExp(AMdelimiter2regexp, "g"),AMdelimiter1);
      arr = str.split(AMdelimiter1);
      for (i=0; i<arr.length; i++)
      	if (AMusedelimiter2) {	     
		arr[i]=arr[i].replace(/AMescape2/g,AMdelimiter2).replace(/AMescape1/g,AMdelimiter1);
	}
      if (arr.length>1 || mtch) {
        if (checkForMathML) {
          checkForMathML = false;
          var nd = AMisMathMLavailable();
          AMnoMathML = nd != null;
          if (AMnoMathML && notifyIfNoMathML) 
            if (alertIfNoMathML)
              alert("To view the ASCIIMathML notation use Internet Explorer 6 +\nMathPlayer (free from www.dessci.com)\n\
                or Firefox/Mozilla/Netscape");
            else AMbody.insertBefore(nd,AMbody.childNodes[0]);
        }
        if (!AMnoMathML) {
          frg = AMstrarr2docFrag(arr,n.nodeType==8,true);
	} else {
	  frg = AMstrarr2docFrag(arr,n.nodeType==8,false);
	}
        var len = frg.childNodes.length;
        n.parentNode.replaceChild(frg,n);
        return len-1;
        
      }
    }
   } else return 0;
  } else if (n.nodeName!="math") {
    for (i=0; i<n.childNodes.length; i++)
      i += AMprocessNodeR(n.childNodes[i], linebreaks);
  }
  return 0;
}

function AMprocessNode(n, linebreaks, spanclassAM) {
  var frag,st;
  if (spanclassAM!=null) {;
    frag = document.getElementsByTagName("span")
    for (var i=0;i<frag.length;i++)
      if (frag[i].className == "AM")
        AMprocessNodeR(frag[i],linebreaks);
  } else {
    try {
      st = n.innerHTML;
    } catch(err) {}
    if (AMusedelimiter2) {
	    if (st==null || 
        st.indexOf(AMdelimiter1)!=-1 || st.indexOf(AMdelimiter2)!=-1) 
      AMprocessNodeR(n,linebreaks);
    } else {
	    if (st==null || 
        st.indexOf(AMdelimiter1)!=-1)// || st.indexOf(AMdelimiter2)!=-1) 
      AMprocessNodeR(n,linebreaks);
    }
  }
  if (isIE) { //needed to match size and font of formula to surrounding text
    frag = document.getElementsByTagName('math');
    for (var i=0;i<frag.length;i++) frag[i].update()
  }
}

var AMbody;
var AMnoMathML = false, AMtranslated = false;
var AMisGecko = 0; var AMnoFonts = false;

function translate(spanclassAM) {
  if (!AMtranslated) { // run this only once
    AMtranslated = true;
    //AMinitSymbols();
    AMbody = document.getElementsByTagName("body")[0];
    AMprocessNode(AMbody, false, spanclassAM);
  }
}
AMinitSymbols();
if (isIE) { // avoid adding MathPlayer info explicitly to each webpage
  document.write("<object id=\"mathplayer\"\
  classid=\"clsid:32F66A20-7614-11D4-BD11-00104BD3F987\"></object>");
  document.write("<?import namespace=\"m\" implementation=\"#mathplayer\"?>");
}


function AMBBoxFor(s) {
	document.getElementById("hidden").innerHTML = 
      '<nobr><span class="typeset"><span class="scale">'+s+'</span></span></nobr>';
      var bbox = {w: document.getElementById("hidden").offsetWidth, h: document.getElementById("hidden").offsetHeight};
      document.getElementById("hidden").innerHTML = '';
      return bbox;
}
//check for TeX font based on approach from jsMath
function AMcheckTeX() {
	hiddendiv = document.createElement("div");
	hiddendiv.style.visibility = "hidden";
	hiddendiv.id = "hidden";
	document.body.appendChild(hiddendiv);
	if (AMisGecko<10900) { //Mozilla 1.8 could use cmex fonts; Mozilla 1.9 only works well with STIX
		wh = AMBBoxFor('<span style="font-family: STIXgeneral, cmex10, serif">&#xEFE8;</span>');
	} else {
		wh = AMBBoxFor('<span style="font-family: STIXgeneral, serif">&#xEFE8;</span>');
	}
	wh2 = AMBBoxFor('<span style="font-family: serif">&#xEFE8;</span>');
	nofonts = (wh.w==wh2.w && wh.h==wh2.h);
	if (nofonts) {
		AMnoMathML = true;
		AMnoFonts = true;
	} else {
		AMnoMathML = false;
		AMnoFonts = false;
	}
}

// GO1.1 Generic onload by Brothercake 
// http://www.brothercake.com/
//onload function (replaces the onload="translate()" in the <body> tag)
function generic()
{
	if (AMnoMathML && typeof waitforAMTcgiloc != 'undefined' && AMTcgiloc==null) {
		setTimeout("generic()",50);
	} else {
		if (!AMnoMathML && AMisGecko>0) {
			AMcheckTeX();
		}
		translate();
	}
};
//setup onload function
if(typeof window.addEventListener != 'undefined')
{
  //.. gecko, safari, konqueror and standard
  window.addEventListener('load', generic, false);
}
else if(typeof document.addEventListener != 'undefined')
{
  //.. opera 7
  document.addEventListener('load', generic, false);
}
else if(typeof window.attachEvent != 'undefined')
{
  //.. win/ie
  window.attachEvent('onload', generic);
}
//** remove this condition to degrade older browsers
else
{
  //.. mac/ie5 and anything else that gets this far
  //if there's an existing onload function
  if(typeof window.onload == 'function')
  {
    //store it
    var existing = onload;
    //add new onload handler
    window.onload = function()
    {
      //call existing onload function
      existing();
      //call generic onload function
      generic();
    };
  }
  else
  {
    //setup onload function
    window.onload = generic;
  }
}

if (checkForMathML) {
          checkForMathML = false;
          var nd = AMisMathMLavailable();
          AMnoMathML = (nd != null);
}

;
/* ASCIIsvgPI.js
==============
This version contains modifications needed for ASCIIsvg to work with
tinyMCE editor plugins.  Modifications made by David Lippman, (c) 2008

JavaScript routines to dynamically generate Scalable Vector Graphics
using a mathematical xy-coordinate system (y increases upwards) and
very intuitive JavaScript commands (no programming experience required).
ASCIIsvg.js is good for learning math and illustrating online math texts.
Works with Internet Explorer+Adobe SVGviewer and SVG enabled Mozilla/Firefox.

Ver 1.2.7 Oct 13, 2005 (c) Peter Jipsen http://www.chapman.edu/~jipsen
Latest version at http://www.chapman.edu/~jipsen/svg/ASCIIsvg.js
If you use it on a webpage, please send the URL to jipsen@chapman.edu

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at
your option) any later version.

This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License (at http://www.gnu.org/copyleft/gpl.html) 
for more details.*/

var AScgiloc = 'http://www.imathas.com/imathas/filter/graph/svgimg.php';
var ASnoSVG = false;
var checkIfSVGavailable = true;
var notifyIfNoSVG = false;
var alertIfNoSVG = false;
var xunitlength = 20;  // pixels
var yunitlength = 20;  // pixels
var origin = [0,0];   // in pixels (default is bottom left corner)
var defaultwidth = 300; defaultheight = 200; defaultborder = [0,0,0,0];
var border = defaultborder;
var strokewidth, strokedasharray, stroke, fill;
var fontstyle, fontfamily, fontsize, fontweight, fontstroke, fontfill;
var markerstrokewidth = "1";
var markerstroke = "black";
var markerfill = "yellow";
var marker = "none";
var arrowfill = stroke;
var dotradius = 4;
var ticklength = 4;
var axesstroke = "black";
var gridstroke = "grey";
var pointerpos = null;
var coordinates = null;
var above = "above";
var below = "below";
var left = "left";
var right = "right";
var aboveleft = "aboveleft";
var aboveright = "aboveright";
var belowleft = "belowleft";
var belowright = "belowright";
var cpi = "\u03C0", ctheta = "\u03B8";
var pi = Math.PI, ln = Math.log, e = Math.E;
var arcsin = Math.asin, arccos = Math.acos, arctan = Math.atan;
var sec = function(x) { return 1/Math.cos(x) };
var csc = function(x) { return 1/Math.sin(x) };
var cot = function(x) { return 1/Math.tan(x) };
var xmin, xmax, ymin, ymax, xscl, yscl, 
    xgrid, ygrid, xtick, ytick, initialized;
var isIE = document.createElementNS==null;
var picture, svgpicture, doc, width, height, a, b, c, d, i, n, p, t, x, y;
var arcsec = function(x) { return arccos(1/x) };
var arccsc = function(x) { return arcsin(1/x) };
var arccot = function(x) { return arctan(1/x) };
var sinh = function(x) { return (Math.exp(x)-Math.exp(-x))/2 };
var cosh = function(x) { return (Math.exp(x)+Math.exp(-x))/2 };
var tanh = 
  function(x) { return (Math.exp(x)-Math.exp(-x))/(Math.exp(x)+Math.exp(-x)) };
var sech = function(x) { return 1/cosh(x) };
var csch = function(x) { return 1/sinh(x) };
var coth = function(x) { return 1/tanh(x) };
var arcsinh = function(x) { return ln(x+Math.sqrt(x*x+1)) };
var arccosh = function(x) { return ln(x+Math.sqrt(x*x-1)) };
var arctanh = function(x) { return ln((1+x)/(1-x))/2 };
var sech = function(x) { return 1/cosh(x) };
var csch = function(x) { return 1/sinh(x) };
var coth = function(x) { return 1/tanh(x) };
var arcsech = function(x) { return arccosh(1/x) };
var arccsch = function(x) { return arcsinh(1/x) };
var arccoth = function(x) { return arctanh(1/x) };
var sign = function(x) { return (x==0?0:(x<0?-1:1)) };
var logten = function(x) { return (Math.LOG10E*Math.log(x)) };


function factorial(x,n) {
  if (n==null) n=1;
  for (var i=x-n; i>0; i-=n) x*=i;
  return (x<0?NaN:(x==0?1:x));
}


function C(x,k) {
  var res=1;
  for (var i=0; i<k; i++) res*=(x-i)/(k-i);
  return res;
}


function chop(x,n) {
  if (n==null) n=0;
  return Math.floor(x*Math.pow(10,n))/Math.pow(10,n);
}


function ran(a,b,n) {
  if (n==null) n=0;
  return chop((b+Math.pow(10,-n)-a)*Math.random()+a,n);
}


function myCreateElementXHTML(t) {
  if (isIE) return document.createElement(t);
  else return document.createElementNS("http://www.w3.org/1999/xhtml",t);
}


function isSVGavailable() {
  if ((ver = navigator.userAgent.toLowerCase().match(/safari\/(\d+)/))!=null) {
// Ilya: David Lippman's suggestion:
//WebKit (Safari and Chrome) has fairly buggy SVG support in the editor - not sure exactly why.
//One option is to edit the /jscript/plugins/asciisvg/js/ASCIIsvgPI.js file, find the isSVGavailable function, and comment out or remove the first "if" block that looks for Safari.  Removing that should trigger the plugin to use image fallback instead of SVG.
//-David Lippman
// Note: isSVGavailable() returns null if SVG is available, 1 if it is not
//Safari 3 can do SVG, but still has issues.  
//return 1;
// End Ilya's
		if (ver[1]>524) {
			return null;
		}
 } 
//Opera can do SVG, but not very pretty, so might want to skip it 
 if ((ver = navigator.userAgent.toLowerCase().match(/opera\/([\d\.]+)/))!=null) {
		if (ver[1]>9.1) {
			return null;
		}
 }
 //Mozillas. 
  if (navigator.product && navigator.product=='Gecko') {
	   var rv = navigator.userAgent.toLowerCase().match(/rv:\s*([\d\.]+)/);
	   if (rv!=null) {
		rv = rv[1].split('.');
		if (rv.length<3) { rv[2] = 0;}
		if (rv.length<2) { rv[1] = 0;}
	   }
	   if (rv!=null && 10000*rv[0]+100*rv[1]+1*rv[2]>=10800) return null;
	   else return 1;
  }
  //IE + AdobeSVGviewer
  if (navigator.appName.slice(0,9)=="Microsoft")
    try	{
      var oSVG=eval("new ActiveXObject('Adobe.SVGCtl.3');");
        return null;
    } catch (e) {
        return 1;
    }
  else return 1;
}

function less(x,y) { return x < y }  // used for scripts in XML files
                                     // since IE does not handle CDATA well
function setText(st,id) { 
  var node = document.getElementById(id);
  if (node!=null)
    if (node.childNodes.length!=0) node.childNodes[0].nodeValue = st;
    else node.appendChild(document.createTextNode(st));
}


function myCreateElementSVG(t) {
  if (isIE) return doc.createElement(t);
  else return doc.createElementNS("http://www.w3.org/2000/svg",t);
}


function getX() {
  return (doc.getElementById("pointerpos").getAttribute("cx")-origin[0])/xunitlength;
}


function getY() {
  return (height-origin[1]-doc.getElementById("pointerpos").getAttribute("cy"))/yunitlength;
}


function mousemove_listener(evt) {
  if (svgpicture.getAttribute("xbase")!=null)
    pointerpos.cx.baseVal.value = evt.clientX-svgpicture.getAttribute("xbase");
  if (svgpicture.getAttribute("ybase")!=null)
    pointerpos.cy.baseVal.value = evt.clientY-svgpicture.getAttribute("ybase");
}


function top_listener(evt) {
  svgpicture.setAttribute("ybase",evt.clientY);
}


function bottom_listener(evt) { 
  svgpicture.setAttribute("ybase",evt.clientY-height+1);
}


function left_listener(evt) {
  svgpicture.setAttribute("xbase",evt.clientX);
}


function right_listener(evt) {
  svgpicture.setAttribute("xbase",evt.clientX-width+1);
}


function switchTo(id) {
//alert(id);
  picture = document.getElementById(id);
  width = picture.getAttribute("width")-0;
  height = picture.getAttribute("height")-0;
  strokewidth = "1" // pixel
  stroke = "black"; // default line color
  fill = "none";    // default fill color
  marker = "none";
  if ((picture.nodeName == "EMBED" || picture.nodeName == "embed") && isIE) {
    svgpicture = picture.getSVGDocument().getElementById("root");
    doc = picture.getSVGDocument();
  } else {
    picture.setAttribute("onmousemove","updateCoords"+(id.slice(id.length-1)-1)+"()");
//alert(picture.getAttribute("onmousemove")+"***");
    svgpicture = picture;
    doc = document;
  }
  xunitlength = svgpicture.getAttribute("xunitlength")-0;
  yunitlength = svgpicture.getAttribute("yunitlength")-0;
  xmin = svgpicture.getAttribute("xmin")-0;
  xmax = svgpicture.getAttribute("xmax")-0;
  ymin = svgpicture.getAttribute("ymin")-0;
  ymax = svgpicture.getAttribute("ymax")-0;
  origin = [svgpicture.getAttribute("ox")-0,svgpicture.getAttribute("oy")-0];
}


function updatePicture(obj) {
//alert(typeof obj)
  var src = document.getElementById((typeof obj=="string"?
              obj:"picture"+(obj+1)+"input")).value;
  xmin = null; xmax = null; ymin = null; ymax = null;
  xscl = null; xgrid = null; yscl = null; ygrid = null;
  initialized = false;
  switchTo((typeof obj=="string"?obj.slice(0,8):"picture"+(obj+1)));
  src = src.replace(/plot\(\x20*([^\"f\[][^\n\r]+?)\,/g,"plot\(\"$1\",");
  src = src.replace(/plot\(\x20*([^\"f\[][^\n\r]+)\)/g,"plot(\"$1\")");
  src = src.replace(/([0-9])([a-zA-Z])/g,"$1*$2");
  src = src.replace(/\)([\(0-9a-zA-Z])/g,"\)*$1");
//alert(src);
  try {
    with (Math) eval(src);
  } catch(err) {alert(err+"\n"+src)}
}


function showHideCode(obj) {
  var node = obj.nextSibling;
  while (node != null && node.nodeName != "BUTTON" && 

    node.nodeName != "button") node = node.nextSibling;
  if (node.style.display == "none") node.style.display = "";
  else node.style.display = "none";
  while (node != null && node.nodeName != "TEXTAREA" && 
    node.nodeName != "textarea") node = node.previousSibling;
  if (node.style.display == "none") node.style.display = "";
  else node.style.display = "none";
//  updatePicture(node.getAttribute("id"));
}


function hideCode() { //do nothing
}


function showcode() { //do nothing
}


function nobutton() { //do nothing
}


function setBorder(l,b,r,t) { 
	if (t==null) {
		border = new Array(l,l,l,l);
	} else {
		border = new Array(l,b,r,t);
	}
}


function initPicture(x_min,x_max,y_min,y_max) {
 if (!initialized) {
  strokewidth = "1"; // pixel
  strokedasharray = null;
  stroke = "black"; // default line color
  fill = "none";    // default fill color
  fontstyle = "italic"; // default shape for text labels
  fontfamily = "times"; // default font
  fontsize = "16";      // default size
  fontweight = "normal";
  fontstroke = "black";  // default font outline color
  fontfill = "black";    // default font color
  marker = "none";
  initialized = true;
  if (x_min!=null) xmin = x_min;
  if (x_max!=null) xmax = x_max;
  if (y_min!=null) ymin = y_min;
  if (y_max!=null) ymax = y_max;
  if (xmin==null) xmin = -5;
  if (xmax==null) xmax = 5;
 if (typeof xmin != "number" || typeof xmax != "number" || xmin >= xmax) 
   alert("Picture requires at least two numbers: xmin < xmax");
 else if (y_max != null && (typeof y_min != "number" || 
          typeof y_max != "number" || y_min >= y_max))
   alert("initPicture(xmin,xmax,ymin,ymax) requires numbers ymin < ymax");
 else {
  //if (width==null) 
  width = picture.getAttribute("width");
  //else picture.setAttribute("width",width);
  if (width==null || width=="") width=defaultwidth;
  //if (height==null) 
  height = picture.getAttribute("height");
  //else picture.setAttribute("height",height);
  if (height==null || height=="") height=defaultheight;
  xunitlength = (width-border[0]-border[2])/(xmax-xmin);
  yunitlength = xunitlength;
//alert(xmin+" "+xmax+" "+ymin+" "+ymax)
  if (ymin==null) {
    origin = [-xmin*xunitlength+border[0],height/2];
    ymin = -(height-border[1]-border[3])/(2*yunitlength);
    ymax = -ymin;
  } else {
    if (ymax!=null) yunitlength = (height-border[1]-border[3])/(ymax-ymin);
    else ymax = (height-border[1]-border[3])/yunitlength + ymin;
    origin = [-xmin*xunitlength+border[0],-ymin*yunitlength+border[1]];
  }
  winxmin = Math.max(border[0]-5,0);
  winxmax = Math.min(width-border[2]+5,width);
  winymin = Math.max(border[3]-5,0);
  winymax = Math.min(height-border[1]+5,height);
//  if (true ||picture.nodeName == "EMBED" || picture.nodeName == "embed") {
    if (isIE) {
      svgpicture = picture.getSVGDocument().getElementById("root");
      while (svgpicture.childNodes.length()>5) 
        svgpicture.removeChild(svgpicture.lastChild); 
      svgpicture.setAttribute("width",width);
      svgpicture.setAttribute("height",height);
      doc = picture.getSVGDocument();
    } else {
      var qnode = document.createElementNS("http://www.w3.org/2000/svg","svg");
      qnode.setAttribute("id",picture.getAttribute("id"));
      qnode.setAttribute("style","display:inline; "+picture.getAttribute("style"));
      qnode.setAttribute("width",picture.getAttribute("width"));
      qnode.setAttribute("height",picture.getAttribute("height"));
      if (picture.parentNode!=null)
        picture.parentNode.replaceChild(qnode,picture);
      else
        svgpicture.parentNode.replaceChild(qnode,svgpicture);
      svgpicture = qnode;
      doc = document;
      pointerpos = doc.getElementById("pointerpos");
      if (pointerpos==null) {
        pointerpos = myCreateElementSVG("circle");
        pointerpos.setAttribute("id","pointerpos");
        pointerpos.setAttribute("cx",0);
        pointerpos.setAttribute("cy",0);
        pointerpos.setAttribute("r",0.5);
        pointerpos.setAttribute("fill","red");
        svgpicture.appendChild(pointerpos);
      }
    }
//  } else {
//    svgpicture = picture;
//    doc = document;
//  }
  svgpicture.setAttribute("xunitlength",xunitlength);
  svgpicture.setAttribute("yunitlength",yunitlength);
  svgpicture.setAttribute("xmin",xmin);
  svgpicture.setAttribute("xmax",xmax);
  svgpicture.setAttribute("ymin",ymin);
  svgpicture.setAttribute("ymax",ymax);
  svgpicture.setAttribute("ox",origin[0]);
  svgpicture.setAttribute("oy",origin[1]);
  var node = myCreateElementSVG("rect");
  node.setAttribute("x","0");
  node.setAttribute("y","0");
  node.setAttribute("width",width);
  node.setAttribute("height",height);
  node.setAttribute("style","stroke-width:1;fill:white");
  svgpicture.appendChild(node);
  if (!isIE && picture.getAttribute("onmousemove")!=null) {
    svgpicture.addEventListener("mousemove", mousemove_listener, true);
    var st = picture.getAttribute("onmousemove");
    svgpicture.addEventListener("mousemove", eval(st.slice(0,st.indexOf("("))), true);
    node = myCreateElementSVG("polyline");
    node.setAttribute("points","0,0 "+width+",0");
    node.setAttribute("style","stroke:white; stroke-width:3");
    node.addEventListener("mousemove", top_listener, true);
    svgpicture.appendChild(node);
    node = myCreateElementSVG("polyline");
    node.setAttribute("points","0,"+height+" "+width+","+height);
    node.setAttribute("style","stroke:white; stroke-width:3");
    node.addEventListener("mousemove", bottom_listener, true);
    svgpicture.appendChild(node);
    node = myCreateElementSVG("polyline");
    node.setAttribute("points","0,0 0,"+height);
    node.setAttribute("style","stroke:white; stroke-width:3");
    node.addEventListener("mousemove", left_listener, true);
    svgpicture.appendChild(node);
    node = myCreateElementSVG("polyline");
    node.setAttribute("points",(width-1)+",0 "+(width-1)+","+height);
    node.setAttribute("style","stroke:white; stroke-width:3");
    node.addEventListener("mousemove", right_listener, true);
    svgpicture.appendChild(node);
  }
  border = defaultborder;
 }
 }
}


function line(p,q,id) { // segment connecting points p,q (coordinates in units)
  var node;
  if (id!=null) node = doc.getElementById(id);
  if (node==null) {
    node = myCreateElementSVG("path");
    node.setAttribute("id", id);
    svgpicture.appendChild(node);
  }
  node.setAttribute("d","M"+(p[0]*xunitlength+origin[0])+","+
    (height-p[1]*yunitlength-origin[1])+" "+
    (q[0]*xunitlength+origin[0])+","+(height-q[1]*yunitlength-origin[1]));
  node.setAttribute("stroke-width", strokewidth);
  if (strokedasharray!=null) 
    node.setAttribute("stroke-dasharray", strokedasharray);
  node.setAttribute("stroke", stroke);
  node.setAttribute("fill", fill);
  if (marker=="dot" || marker=="arrowdot") {
    ASdot(p,4,markerstroke,markerfill);
    if (marker=="arrowdot") arrowhead(p,q);
    ASdot(q,4,markerstroke,markerfill);
  } else if (marker=="arrow") arrowhead(p,q);
}


function path(plist,id,c) {
  if (c==null) c="";
  var node, st, i;
  if (id!=null) node = doc.getElementById(id);
  if (node==null) {
    node = myCreateElementSVG("path");
    node.setAttribute("id", id);
    svgpicture.appendChild(node);
  }
  if (typeof plist == "string") st = plist;
  else {
    st = "M";
    st += (plist[0][0]*xunitlength+origin[0])+","+
          (height-plist[0][1]*yunitlength-origin[1])+" "+c;
    for (i=1; i<plist.length; i++)
      st += (plist[i][0]*xunitlength+origin[0])+","+
            (height-plist[i][1]*yunitlength-origin[1])+" ";
  }
  node.setAttribute("d", st);
  node.setAttribute("stroke-width", strokewidth);
  if (strokedasharray!=null) 
    node.setAttribute("stroke-dasharray", strokedasharray);
  node.setAttribute("stroke", stroke);
  node.setAttribute("fill", fill);
  if (marker=="dot" || marker=="arrowdot")
    for (i=0; i<plist.length; i++)
      if (c!="C" && c!="T" || i!=1 && i!=2)
        ASdot(plist[i],4,markerstroke,markerfill);
}


function curve(plist,id) {
  path(plist,id,"T");
}


function circle(center,radius,id) { // coordinates in units
  var node;
  if (id!=null) node = doc.getElementById(id);
  if (node==null) {
    node = myCreateElementSVG("circle");
    node.setAttribute("id", id);
    svgpicture.appendChild(node);
  }

  node.setAttribute("cx",center[0]*xunitlength+origin[0]);
  node.setAttribute("cy",height-center[1]*yunitlength-origin[1]);
  node.setAttribute("r",radius*xunitlength);
  node.setAttribute("stroke-width", strokewidth);
  node.setAttribute("stroke", stroke);
  node.setAttribute("fill", fill);
}


function loop(p,d,id) { 
// d is a direction vector e.g. [1,0] means loop starts in that direction
  if (d==null) d=[1,0];
  path([p,[p[0]+d[0],p[1]+d[1]],[p[0]-d[1],p[1]+d[0]],p],id,"C");
  if (marker=="arrow" || marker=="arrowdot") 
    arrowhead([p[0]+Math.cos(1.4)*d[0]-Math.sin(1.4)*d[1],
               p[1]+Math.sin(1.4)*d[0]+Math.cos(1.4)*d[1]],p);
}


function arc(start,end,radius,id) { // coordinates in units
  var node, v;
//alert([fill, stroke, origin, xunitlength, yunitlength, height])
  if (id!=null) node = doc.getElementById(id);
  if (radius==null) {
    v=[end[0]-start[0],end[1]-start[1]];
    radius = Math.sqrt(v[0]*v[0]+v[1]*v[1]);
  }
  if (node==null) {
    node = myCreateElementSVG("path");
    node.setAttribute("id", id);
    svgpicture.appendChild(node);
  }
  node.setAttribute("d","M"+(start[0]*xunitlength+origin[0])+","+
    (height-start[1]*yunitlength-origin[1])+" A"+radius*xunitlength+","+
     radius*yunitlength+" 0 0,0 "+(end[0]*xunitlength+origin[0])+","+
    (height-end[1]*yunitlength-origin[1]));
  node.setAttribute("stroke-width", strokewidth);
  node.setAttribute("stroke", stroke);
  node.setAttribute("fill", fill);
  if (marker=="arrow" || marker=="arrowdot") {
    u = [(end[1]-start[1])/4,(start[0]-end[0])/4];
    v = [(end[0]-start[0])/2,(end[1]-start[1])/2];
//alert([u,v])
    v = [start[0]+v[0]+u[0],start[1]+v[1]+u[1]];
  } else v=[start[0],start[1]];
  if (marker=="dot" || marker=="arrowdot") {
    ASdot(start,4,markerstroke,markerfill);
    if (marker=="arrowdot") arrowhead(v,end);
    ASdot(end,4,markerstroke,markerfill);
  } else if (marker=="arrow") arrowhead(v,end);
}


function ellipse(center,rx,ry,id) { // coordinates in units

  var node;
  if (id!=null) node = doc.getElementById(id);
  if (node==null) {
    node = myCreateElementSVG("ellipse");
    node.setAttribute("id", id);
    svgpicture.appendChild(node);
  }
  node.setAttribute("cx",center[0]*xunitlength+origin[0]);
  node.setAttribute("cy",height-center[1]*yunitlength-origin[1]);
  node.setAttribute("rx",rx*xunitlength);
  node.setAttribute("ry",ry*yunitlength);
  node.setAttribute("stroke-width", strokewidth);
  node.setAttribute("stroke", stroke);
  node.setAttribute("fill", fill);
}


function rect(p,q,id,rx,ry) { // opposite corners in units, rounded by radii
  var node;
  if (id!=null) node = doc.getElementById(id);
  if (node==null) {
    node = myCreateElementSVG("rect");
    node.setAttribute("id", id);
    svgpicture.appendChild(node);
  }
  node.setAttribute("x",p[0]*xunitlength+origin[0]);
  node.setAttribute("y",height-q[1]*yunitlength-origin[1]);
  node.setAttribute("width",(q[0]-p[0])*xunitlength);
  node.setAttribute("height",(q[1]-p[1])*yunitlength);
  if (rx!=null) node.setAttribute("rx",rx*xunitlength);
  if (ry!=null) node.setAttribute("ry",ry*yunitlength);
  node.setAttribute("stroke-width", strokewidth);
  node.setAttribute("stroke", stroke);
  node.setAttribute("fill", fill);
}

function text(p,st,pos,angle) {
	p[0] = p[0]*xunitlength+origin[0];
	p[1] = p[1]*yunitlength+origin[1];
	textabs(p,st,pos,angle);
}

function textabs(p,st,pos,angle,id,fontsty) {
  if (angle==null) {
	  angle = 0;
  } else {
	  angle = (360 - angle)%360;
  }
  var textanchor = "middle";
  var dx=0; var dy=0;
  if (angle==270) {
	  var dy = 0; var dx = fontsize/3;
	  if (pos!=null) {
	    if (pos.match(/left/)) {dx = -fontsize/2;}
	    if (pos.match(/right/)) {dx = fontsize-0;}
	    if (pos.match(/above/)) {
	      textanchor = "start";
	      dy = -fontsize/2;
	    }
	    if (pos.match(/below/)) {
	      textanchor = "end";
	      dy = fontsize/2;
	    }
	  }
  } 
  if (angle==90) {
	  var dy = 0; var dx = -fontsize/3;
	  if (pos!=null) {
	    if (pos.match(/left/)) dx = -fontsize-0;
	    if (pos.match(/right/)) dx = fontsize/2;
	    if (pos.match(/above/)) {
	      textanchor = "end";
	      dy = -fontsize/2;
	    }
	    if (pos.match(/below/)) {
	      textanchor = "start";
	      dy = fontsize/2;
	    }
	  }
  }
  if (angle==0) {
	  var dx = 0; var dy = fontsize/3;
	  if (pos!=null) {
	    if (pos.match(/above/)) { dy = -fontsize/2; }
	    if (pos.match(/below/)) { dy = fontsize-0; }
	    if (pos.match(/right/)) {
	      textanchor = "start";
	      dx = fontsize/2;
	    }
	    if (pos.match(/left/)) {
	      textanchor = "end";
	      dx = -fontsize/2;
	    }
	  }
  }
 
  var node;
  if (id!=null) node = doc.getElementById(id);
  if (node==null) {
    node = myCreateElementSVG("text");
    node.setAttribute("id", id);
    svgpicture.appendChild(node);
    node.appendChild(doc.createTextNode(st));
  }
  node.lastChild.nodeValue = st;
  node.setAttribute("x",p[0]+dx);
  node.setAttribute("y",height-p[1]+dy);
  if (angle != 0) {
	  node.setAttribute("transform","rotate("+angle+" "+(p[0]+dx)+" "+(height-p[1]+dy)+")");
  }
  node.setAttribute("font-style",(fontsty!=null?fontsty:fontstyle));
  node.setAttribute("font-family",fontfamily);
  node.setAttribute("font-size",fontsize);
  node.setAttribute("font-weight",fontweight);
  node.setAttribute("text-anchor",textanchor);
  if (fontstroke!="none") node.setAttribute("stroke",fontstroke);
  if (fontfill!="none") node.setAttribute("fill",fontfill);
  node.setAttribute("stroke-width","0px");
  return p;
}


function ASdot(center,radius,s,f) { // coordinates in units, radius in pixel
  if (s==null) s = stroke; if (f==null) f = fill;
  var node = myCreateElementSVG("circle");
  node.setAttribute("cx",center[0]*xunitlength+origin[0]);
  node.setAttribute("cy",height-center[1]*yunitlength-origin[1]);
  node.setAttribute("r",radius);
  node.setAttribute("stroke-width", strokewidth);
  node.setAttribute("stroke", s);
  node.setAttribute("fill", f);
  svgpicture.appendChild(node);
}


function dot(center, typ, label, pos, id) {
  var node;
  var cx = center[0]*xunitlength+origin[0];
  var cy = height-center[1]*yunitlength-origin[1];
  if (id!=null) node = doc.getElementById(id);
  if (typ=="+" || typ=="-" || typ=="|") {
    if (node==null) {
      node = myCreateElementSVG("path");
      node.setAttribute("id", id);
      svgpicture.appendChild(node);
    }
    if (typ=="+") {
      node.setAttribute("d",
        " M "+(cx-ticklength)+" "+cy+" L "+(cx+ticklength)+" "+cy+
        " M "+cx+" "+(cy-ticklength)+" L "+cx+" "+(cy+ticklength));
      node.setAttribute("stroke-width", .5);
      node.setAttribute("stroke", axesstroke);
    } else {
      if (typ=="-") node.setAttribute("d",
        " M "+(cx-ticklength)+" "+cy+" L "+(cx+ticklength)+" "+cy);
      else node.setAttribute("d",
        " M "+cx+" "+(cy-ticklength)+" L "+cx+" "+(cy+ticklength));
      node.setAttribute("stroke-width", strokewidth);
      node.setAttribute("stroke", stroke);
    }
  } else {
    if (node==null) {
      node = myCreateElementSVG("circle");
      node.setAttribute("id", id);
      svgpicture.appendChild(node);
    }
    node.setAttribute("cx",cx);
    node.setAttribute("cy",cy);
    node.setAttribute("r",dotradius);
    node.setAttribute("stroke-width", strokewidth);
    node.setAttribute("stroke", stroke);
    node.setAttribute("fill", (typ=="open"?"white":stroke));
  }
  if (label!=null) 
    text(center,label,(pos==null?"below":pos),(id==null?id:id+"label"))
}


function arrowhead(p,q) { // draw arrowhead at q (in units)
  var up;
  var v = [p[0]*xunitlength+origin[0],height-p[1]*yunitlength-origin[1]];
  var w = [q[0]*xunitlength+origin[0],height-q[1]*yunitlength-origin[1]];
  var u = [w[0]-v[0],w[1]-v[1]];
  var d = Math.sqrt(u[0]*u[0]+u[1]*u[1]);
  if (d > 0.00000001) {
    u = [u[0]/d, u[1]/d];
    up = [-u[1],u[0]];
    var node = myCreateElementSVG("path");
    node.setAttribute("d","M "+(w[0]-15*u[0]-4*up[0])+" "+
      (w[1]-15*u[1]-4*up[1])+" L "+(w[0]-3*u[0])+" "+(w[1]-3*u[1])+" L "+
      (w[0]-15*u[0]+4*up[0])+" "+(w[1]-15*u[1]+4*up[1])+" z");
    node.setAttribute("stroke-width", markerstrokewidth);
    node.setAttribute("stroke", stroke); /*was markerstroke*/
    node.setAttribute("fill", stroke); /*was arrowfill*/
    svgpicture.appendChild(node);    
  }
}


function chopZ(st) {
  var k = st.indexOf(".");
  if (k==-1) return st;
  for (var i=st.length-1; i>k && st.charAt(i)=="0"; i--);
  if (i==k) i--;
  return st.slice(0,i+1);
}


function grid(dx,dy) { // for backward compatibility
  axes(dx,dy,null,dx,dy)
}


function noaxes() {
  if (!initialized) initPicture();
}


function axes(dx,dy,labels,gdx,gdy,dox,doy) {
//xscl=x is equivalent to xtick=x; xgrid=x; labels=true;
  var x, y, ldx, ldy, lx, ly, lxp, lyp, pnode, st;
  if (!initialized) initPicture();
  if (typeof dx=="string") { labels = dx; dx = null; }
  if (typeof dy=="string") { gdx = dy; dy = null; }
  if (xscl!=null) {dx = xscl; gdx = xscl; labels = dx}
  if (yscl!=null) {dy = yscl; gdy = yscl}
  if (xtick!=null) {dx = xtick}
  if (ytick!=null) {dy = ytick}
  if (dox==null) {dox = true;}
  if (doy==null) {doy = true;}
  if (dox=="off" || dox==0) { dox = false;} else {dox = true;}
  if (doy=="off" || doy==0) { doy = false;} else {doy = true;}
//alert(null)
  dx = (dx==null?xunitlength:dx*xunitlength);
  dy = (dy==null?dx:dy*yunitlength);
  fontsize = Math.floor(Math.min(dx/1.5,dy/1.5,16));//alert(fontsize)
  ticklength = fontsize/4;
  if (xgrid!=null) gdx = xgrid;
  if (ygrid!=null) gdy = ygrid;
  if (gdx!=null) {
    gdx = (typeof gdx=="string"?dx:gdx*xunitlength);
    gdy = (gdy==null?dy:gdy*yunitlength);
    pnode = myCreateElementSVG("path");
    st="";
    if (dox && gdx>0) {
	    for (x = origin[0]; x<=winxmax; x = x+gdx)
	      if (x>=winxmin) st += " M"+x+","+winymin+" "+x+","+winymax;
	    for (x = origin[0]-gdx; x>=winxmin; x = x-gdx)
	      if (x<=winxmax) st += " M"+x+","+winymin+" "+x+","+winymax;
    }
    if (doy && gdy>0) {
	    for (y = height-origin[1]; y<=winymax; y = y+gdy)
	      if (y>=winymin) st += " M"+winxmin+","+y+" "+winxmax+","+y;
	    for (y = height-origin[1]-gdy; y>=winymin; y = y-gdy)
	      if (y<=winymax) st += " M"+winxmin+","+y+" "+winxmax+","+y;
    }
    pnode.setAttribute("d",st);
    pnode.setAttribute("stroke-width", .5);
    pnode.setAttribute("stroke", gridstroke);
    pnode.setAttribute("fill", fill);
    svgpicture.appendChild(pnode);
  }
  pnode = myCreateElementSVG("path");
  if (dox) {
	  st="M"+winxmin+","+(height-origin[1])+" "+winxmax+","+
    (height-origin[1]);
  }
  if (doy) {
	  st += " M"+origin[0]+","+winymin+" "+origin[0]+","+winymax;
  }
  if (dox) {
	  for (x = origin[0]; x<winxmax; x = x+dx)
	    if (x>=winymin) st += " M"+x+","+(height-origin[1]+ticklength)+" "+x+","+
		   (height-origin[1]-ticklength);
	  for (x = origin[0]-dx; x>winxmin; x = x-dx)
	   if (x<=winxmax) st += " M"+x+","+(height-origin[1]+ticklength)+" "+x+","+
		   (height-origin[1]-ticklength);
  }
  if (doy) {
	  for (y = height-origin[1]; y<winymax; y = y+dy)
	    if (y>=winymin) st += " M"+(origin[0]+ticklength)+","+y+" "+(origin[0]-ticklength)+","+y;
	  for (y = height-origin[1]-dy; y>winymin; y = y-dy)
	    if (y<=winymax) st += " M"+(origin[0]+ticklength)+","+y+" "+(origin[0]-ticklength)+","+y;
  }
  if (labels!=null) with (Math) {
    ldx = dx/xunitlength;
    ldy = dy/yunitlength;
    lx = (xmin>0 || xmax<0?xmin:0);
    ly = (ymin>0 || ymax<0?ymin:0);
    lxp = (ly==0?"below":"above");
    lyp = (lx==0?"left":"right");
    var ddx = floor(1.1-log(ldx)/log(10))+1;
    var ddy = floor(1.1-log(ldy)/log(10))+1;
    if (ddy<0) { ddy = 0;}
    if (ddx<0) { ddx = 0;}
    if (dox) {
	    for (x = (doy?ldx:0); x<=xmax; x = x+ldx)
	      if (x>=xmin) text([x,ly],chopZ(x.toFixed(ddx)),lxp);
	    for (x = -ldx; xmin<=x; x = x-ldx)
	      if (x<=xmax) text([x,ly],chopZ(x.toFixed(ddx)),lxp);
    }
    if (doy) {
	    for (y = (dox?ldy:0); y<=ymax; y = y+ldy)
	      if (y>=ymin) text([lx,y],chopZ(y.toFixed(ddy)),lyp);
	    for (y = -ldy; ymin<=y; y = y-ldy)
	      if (y<=ymax) text([lx,y],chopZ(y.toFixed(ddy)),lyp);
    }
  }
  pnode.setAttribute("d",st);
  pnode.setAttribute("stroke-width", .5);
  pnode.setAttribute("stroke", axesstroke);
  pnode.setAttribute("fill", fill);
  svgpicture.appendChild(pnode);
}

function safepow(base,power) {
	if (base<0 && Math.floor(power)!=power) {
		for (var j=3; j<50; j+=2) {
			if (Math.abs(Math.round(j*power)-(j*power))<.000001) {
				if (Math.round(j*power)%2==0) {
					return Math.pow(Math.abs(base),power);
				} else {
					return -1*Math.pow(Math.abs(base),power);
				}
			}
		}
		return sqrt(-1);
	} else {
		return Math.pow(base,power);
	}
}

function nthroot(n,base) {
	return safepow(base,1/n);
}
function nthlogten(n,v) {
	return ((Math.log(v))/(Math.log(n)));
}
function matchtolower(match) {
	return match.toLowerCase();
}

function mathjs(st,varlist) {
  //translate a math formula to js function notation
  // a^b --> pow(a,b)
  // na --> n*a
  // (...)d --> (...)*d
  // n! --> factorial(n)
  // sin^-1 --> arcsin etc.
  //while ^ in string, find term on left and right
  //slice and concat new formula string
  //parenthesizes the function variables
  st = st.replace("[","(");
  st = st.replace("]",")");
  st = st.replace(/arc(sin|cos|tan)/g,"arc $1");
  if (varlist != null)  {
	  var reg = new RegExp("(sqrt|ln|log|sin|cos|tan|sec|csc|cot|abs)[\(]","g");
	  st = st.replace(reg,"$1#(");
	  var reg = new RegExp("("+varlist+")("+varlist+")$","g");
	  st = st.replace(reg,"($1)($2)");
	  var reg = new RegExp("("+varlist+")(sqrt|ln|log|sin|cos|tan|sec|csc|cot|abs)","g");
	  st = st.replace(reg,"($1)$2");
	  var reg = new RegExp("("+varlist+")("+varlist+")([^a-df-zA-Z#])","g"); //rem \(
	  st = st.replace(reg,"($1)($2)$3"); //get xy3
	  var reg = new RegExp("("+varlist+")("+varlist+")(\w*[^\(#])","g");
	  st = st.replace(reg,"($1)($2)$3"); //get xysin
	  var reg = new RegExp("([^a-df-zA-Z])("+varlist+")([^a-df-zA-Z])","g");
	  st = st.replace(reg,"$1($2)$3");	  
	  var reg = new RegExp("^("+varlist+")([^a-df-zA-Z])","g");
	  st = st.replace(reg,"($1)$2");
	  var reg = new RegExp("([^a-df-zA-Z])("+varlist+")$","g");
	  st = st.replace(reg,"$1($2)");
  }
  st = st.replace(/#/g,"");
  st = st.replace(/arc\s+(sin|cos|tan)/g,"arc$1");
  st = st.replace(/\s/g,"");
  st = st.replace(/(Sin|Cos|Tan|Sec|Csc|Cot|Arc|Abs|Log|Ln)/g, matchtolower);
  st = st.replace(/log_(\d+)\(/,"nthlog($1,");
  st = st.replace(/log/g,"logten");
  
  if (st.indexOf("^-1")!=-1) {
    st = st.replace(/sin\^-1/g,"arcsin");
    st = st.replace(/cos\^-1/g,"arccos");
    st = st.replace(/tan\^-1/g,"arctan");
    st = st.replace(/sec\^-1/g,"arcsec");
    st = st.replace(/csc\^-1/g,"arccsc");
    st = st.replace(/cot\^-1/g,"arccot");
    st = st.replace(/sinh\^-1/g,"arcsinh");
    st = st.replace(/cosh\^-1/g,"arccosh");
    st = st.replace(/tanh\^-1/g,"arctanh");
    st = st.replace(/sech\^-1/g,"arcsech");
    st = st.replace(/csch\^-1/g,"arccsch");
    st = st.replace(/coth\^-1/g,"arccoth");
  }
  
  st = st.replace(/root\((\d+)\)\(/,"nthroot($1,");
  //st = st.replace(/E/g,"(EE)");
  st = st.replace(/([0-9])E([\-0-9])/g,"$1(EE)$2");
  
  st = st.replace(/^e$/g,"(E)");
  st = st.replace(/pi/g,"(pi)");
  st = st.replace(/^e([^a-zA-Z])/g,"(E)$1");
  st = st.replace(/([^a-zA-Z])e$/g,"$1(E)");
  
  st = st.replace(/([^a-zA-Z])e([^a-zA-Z])/g,"$1(E)$2");
  st = st.replace(/([0-9])([\(a-zA-Z])/g,"$1*$2");
  st = st.replace(/(!)([0-9\(])/g,"$1*$2");
  //want to keep scientific notation
  st= st.replace(/([0-9])\*\(EE\)([\-0-9])/,"$1e$2");

  
  st = st.replace(/\)([\(0-9a-zA-Z])/g,"\)*$1");
  
  var i,j,k, ch, nested;
  while ((i=st.indexOf("^"))!=-1) {

    //find left argument
    if (i==0) return "Error: missing argument";
    j = i-1;
    ch = st.charAt(j);
    if (ch>="0" && ch<="9") {// look for (decimal) number
      j--;
      while (j>=0 && (ch=st.charAt(j))>="0" && ch<="9") j--;
      if (ch==".") {
        j--;
        while (j>=0 && (ch=st.charAt(j))>="0" && ch<="9") j--;
      }
    } else if (ch==")") {// look for matching opening bracket and function name
      nested = 1;
      j--;
      while (j>=0 && nested>0) {
        ch = st.charAt(j);
        if (ch=="(") nested--;
        else if (ch==")") nested++;
        j--;
      }
      while (j>=0 && (ch=st.charAt(j))>="a" && ch<="z" || ch>="A" && ch<="Z")
        j--;
    } else if (ch>="a" && ch<="z" || ch>="A" && ch<="Z") {// look for variable
      j--;
      while (j>=0 && (ch=st.charAt(j))>="a" && ch<="z" || ch>="A" && ch<="Z")
        j--;
    } else { 
      return "Error: incorrect syntax in "+st+" at position "+j;
    }
    //find right argument
    if (i==st.length-1) return "Error: missing argument";
    k = i+1;
    ch = st.charAt(k);
    nch = st.charAt(k+1);
    if (ch>="0" && ch<="9" || (ch=="-" && nch!="(") || ch==".") {// look for signed (decimal) number
      k++;
      while (k<st.length && (ch=st.charAt(k))>="0" && ch<="9") k++;
      if (ch==".") {
        k++;
        while (k<st.length && (ch=st.charAt(k))>="0" && ch<="9") k++;
      }
    } else if (ch=="(" || (ch=="-" && nch=="(")) {// look for matching closing bracket and function name
      if (ch=="-") { k++;}
      nested = 1;
      k++;
      while (k<st.length && nested>0) {
        ch = st.charAt(k);
        if (ch=="(") nested++;
        else if (ch==")") nested--;
        k++;
      }
    } else if (ch>="a" && ch<="z" || ch>="A" && ch<="Z") {// look for variable
      k++;
      while (k<st.length && (ch=st.charAt(k))>="a" && ch<="z" ||
               ch>="A" && ch<="Z") k++;
    } else { 
      return "Error: incorrect syntax in "+st+" at position "+k;
    }
    st = st.slice(0,j+1)+"safepow("+st.slice(j+1,i)+","+st.slice(i+1,k)+")"+
           st.slice(k);
  }
  while ((i=st.indexOf("!"))!=-1) {
    //find left argument
    if (i==0) return "Error: missing argument";
    j = i-1;
    ch = st.charAt(j);
    if (ch>="0" && ch<="9") {// look for (decimal) number
      j--;
      while (j>=0 && (ch=st.charAt(j))>="0" && ch<="9") j--;
      if (ch==".") {
        j--;
        while (j>=0 && (ch=st.charAt(j))>="0" && ch<="9") j--;
      }
    } else if (ch==")") {// look for matching opening bracket and function name
      nested = 1;
      j--;
      while (j>=0 && nested>0) {
        ch = st.charAt(j);
        if (ch=="(") nested--;
        else if (ch==")") nested++;
        j--;
      }
      while (j>=0 && (ch=st.charAt(j))>="a" && ch<="z" || ch>="A" && ch<="Z")
        j--;
    } else if (ch>="a" && ch<="z" || ch>="A" && ch<="Z") {// look for variable
      j--;
      while (j>=0 && (ch=st.charAt(j))>="a" && ch<="z" || ch>="A" && ch<="Z")
        j--;
    } else { 
      return "Error: incorrect syntax in "+st+" at position "+j;
    }
    st = st.slice(0,j+1)+"factorial("+st.slice(j+1,i)+")"+st.slice(i+1);
  }
  return st;
}


function slopefield(fun,dx,dy) {
  var g = fun;
  if (typeof fun=="string") 
    eval("g = function(x,y){ with(Math) return "+mathjs(fun)+" }");
  var gxy,x,y,u,v,dz;
  if (dx==null) dx=1;
  if (dy==null) dy=1;
  dz = Math.sqrt(dx*dx+dy*dy)/6;
  var x_min = Math.ceil(xmin/dx);
  var y_min = Math.ceil(ymin/dy);
  for (x = x_min; x <= xmax; x += dx)
    for (y = y_min; y <= ymax; y += dy) {
      gxy = g(x,y);
      if (!isNaN(gxy)) {
        if (Math.abs(gxy)=="Infinity") {u = 0; v = dz;}
        else {u = dz/Math.sqrt(1+gxy*gxy); v = gxy*u;}
        line([x-u,y-v],[x+u,y+v]);
      }
    }
}


//ASCIIsvgAddon.js dumped here
function drawPictures() {
	drawPics()
}

//ShortScript format:
//xmin,xmax,ymin,ymax,xscl,yscl,labels,xgscl,ygscl,width,height plotcommands(see blow)
//plotcommands: type,eq1,eq2,startmaker,endmarker,xmin,xmax,color,strokewidth,strokedash
function parseShortScript(sscript,gw,gh) {
	if (sscript == null) {
		initialized = false;
		sscript = picture.sscr;
	}
	
	var sa= sscript.split(",");
	
	if (gw && gh) {
		sa[9] = gw;
		sa[10] = gh;
		sscript = sa.join(",");
		picture.setAttribute("sscr", sscript);
	}
	picture.setAttribute("width", sa[9]);
	picture.setAttribute("height", sa[10]);
	picture.style.width = sa[9] + "px";
	picture.style.height = sa[10] + "px";
	
	if (sa.length > 10) {
		commands = 'setBorder(5);';
		commands += 'width=' +sa[9] + '; height=' +sa[10] + ';';
		commands += 'initPicture(' + sa[0] +','+ sa[1] +','+ sa[2] +','+ sa[3] + ');';
		commands += 'axes(' + sa[4] +','+ sa[5] +','+ sa[6] +','+ sa[7] +','+ sa[8]+ ');';
				
		var inx = 11;
		var eqnlist = 'Graphs: ';
		
		while (sa.length > inx+9) {
		   commands += 'stroke="' + sa[inx+7] + '";';
		   commands += 'strokewidth="' + sa[inx+8] + '";'
		   //commands += 'strokedasharray="' + sa[inx+9] + '";'	
		   if (sa[inx+9] != "") {
			   commands += 'strokedasharray="' + sa[inx+9].replace(/\s+/g,',') + '";';
		   }
		   if (sa[inx]=="slope") {
			   eqnlist += "dy/dx="+sa[inx+1] + "; ";
			commands += 'slopefield("' + sa[inx+1] + '",' + sa[inx+2] + ',' + sa[inx+2] + ');'; 
		   } else {
			if (sa[inx]=="func") {
				eqnlist += "y="+sa[inx+1] + "; ";
				eqn = '"' + sa[inx+1] + '"';
			} else if (sa[inx] == "polar") {
				eqnlist += "r="+sa[inx+1] + "; ";
				eqn = '["cos(t)*(' + sa[inx+1] + ')","sin(t)*(' + sa[inx+1] + ')"]';
			} else if (sa[inx] == "param") {
				eqnlist += "[x,y]=["+sa[inx+1] + "," + sa[inx+2] + "]; ";
				eqn = '["' + sa[inx+1] + '","'+ sa[inx+2] + '"]';
			}
			
			
			if (typeof eval(sa[inx+5]) == "number") {
		//	if ((sa[inx+5]!='null')&&(sa[inx+5].length>0)) {
				//commands += 'myplot(' + eqn +',"' + sa[inx+3] +  '","' + sa[inx+4]+'",' + sa[inx+5] + ',' + sa[inx+6]  +');';
				commands += 'plot(' + eqn +',' + sa[inx+5] + ',' + sa[inx+6] +',null,null,' + sa[inx+3] +  ',' + sa[inx+4] +');';
			
			} else {
				commands += 'plot(' + eqn +',null,null,null,null,' + sa[inx+3] +  ',' + sa[inx+4]+');';
			}
		   }
		   inx += 10;
		}
		
		try {
			eval(commands);
		} catch (e) {alert("Graph not ready");}
		
		picture.setAttribute("alt",eqnlist);
		//picture.setAttribute("width", sa[9]);
		//picture.setAttribute("height", sa[9]);
		
		return commands;
	}
}




function drawPics() {
  var index, nd;
  pictures = document.getElementsByTagName("embed");
  var len = pictures.length;
  
  
  for (index = 0; index < len; index++) {
	  picture = ((!ASnoSVG && isIE) ? pictures[index] : pictures[0]);
   // for (index = len-1; index >=0; index--) {
	//  picture = pictures[index];
	  
	  if (!ASnoSVG) {
		  initialized = false;
		  var sscr = picture.getAttribute("sscr");
		  if ((sscr != null) && (sscr != "")) { //sscr from editor
			  try {
				  parseShortScript(sscr);
			  } catch (e) {}
		  } else {
			  src = picture.getAttribute("script"); //script from showplot
			  if ((src!=null) && (src != "")) {
				  try {
					  with (Math) eval(src);
				  } catch(err) {alert(err+"\n"+src)}
			  }
		  }
	  } else {
		  if (picture.getAttribute("sscr")!='') {
			  n = document.createElement('img');
			  n.setAttribute("style",picture.getAttribute("style"));
			  n.setAttribute("src",AScgiloc+'?sscr='+encodeURIComponent(picture.getAttribute("sscr")));
			  pn = picture.parentNode;
			  pn.replaceChild(n,picture);
		  }
		  
	  }
	  
  }
}

//modified by David Lippman from original in AsciiSVG.js by Peter Jipsen
//added min/max type:  0:nothing, 1:arrow, 2:open dot, 3:closed dot
function plot(fun,x_min,x_max,points,id,min_type,max_type) {
  var pth = [];
  var f = function(x) { return x }, g = fun;
  var name = null;
  if (typeof fun=="string") 
    eval("g = function(x){ with(Math) return "+mathjs(fun)+" }");
  else if (typeof fun=="object") {
    eval("f = function(t){ with(Math) return "+mathjs(fun[0])+" }");
    eval("g = function(t){ with(Math) return "+mathjs(fun[1])+" }");
  }
  if (typeof x_min=="string") { name = x_min; x_min = xmin }
  else name = id;
  var min = (x_min==null?xmin:x_min);
  var max = (x_max==null?xmax:x_max);
  if (max <= min) { return null;}
  //else {
  var inc = max-min-0.000001*(max-min);
  inc = (points==null?inc/200:inc/points);
  var gt;
//alert(typeof g(min))
  for (var t = min; t <= max; t += inc) {
    gt = g(t);
    if (!(isNaN(gt)||Math.abs(gt)=="Infinity")) pth[pth.length] = [f(t), gt];
  }
  path(pth,name);
  if (min_type == 1) {
	arrowhead(pth[1],pth[0]);
  } else if (min_type == 2) {
	dot(pth[0], "open");
  } else if (min_type == 3) {
	dot(pth[0], "closed");
  }
  if (max_type == 1) {
	arrowhead(pth[pth.length-2],pth[pth.length-1]);
  } else if (max_type == 2) {
	dot(pth[pth.length-1], "open");
  } else if (max_type == 3) {
	dot(pth[pth.length-1], "closed");
  }

  return p;
  //}
}

//end ASCIIsvgAddon.js dump

function updateCoords(ind) {
  switchTo("picture"+(ind+1));
  var gx=getX(), gy=getY();
  if ((xmax-gx)*xunitlength > 6*fontsize || (gy-ymin)*yunitlength > 2*fontsize)
    text([xmax,ymin],"("+gx.toFixed(2)+", "+gy.toFixed(2)+")",
         "aboveleft","AScoord"+ind,"");
  else text([xmax,ymin]," ","aboveleft","AScoord"+ind,"");
}


function updateCoords0() {updateCoords(0)}
function updateCoords1() {updateCoords(1)}
function updateCoords2() {updateCoords(2)}
function updateCoords3() {updateCoords(3)}
function updateCoords4() {updateCoords(4)}
function updateCoords5() {updateCoords(5)}
function updateCoords6() {updateCoords(6)}
function updateCoords7() {updateCoords(7)}
function updateCoords8() {updateCoords(8)}
function updateCoords9() {updateCoords(9)}
ASfn = [function() {updatePicture(0)},
  function() {updatePicture(1)},
  function() {updatePicture(2)},
  function() {updatePicture(3)},
  function() {updatePicture(4)},
  function() {updatePicture(5)},
  function() {updatePicture(6)},
  function() {updatePicture(7)},

  function() {updatePicture(8)},
  function() {updatePicture(9)}];
ASupdateCoords = [function() {updateCoords(0)},
  function() {updateCoords(1)},
  function() {updateCoords(2)},
  function() {updateCoords(3)},
  function() {updateCoords(4)},
  function() {updateCoords(5)},
  function() {updateCoords(6)},
  function() {updateCoords(7)},
  function() {updateCoords(8)},
  function() {updateCoords(9)}];


// GO1.1 Generic onload by Brothercake 
// http://www.brothercake.com/
//onload function
function generic()
{
  drawPictures();
};
//setup onload function
if(typeof window.addEventListener != 'undefined')
{
  //.. gecko, safari, konqueror and standard
  window.addEventListener('load', generic, false);
}
else if(typeof document.addEventListener != 'undefined')
{
  //.. opera 7
  document.addEventListener('load', generic, false);
}
else if(typeof window.attachEvent != 'undefined')
{
  //.. win/ie
  window.attachEvent('onload', generic);
}
//** remove this condition to degrade older browsers
else
{
  //.. mac/ie5 and anything else that gets this far
  //if there's an existing onload function
  if(typeof window.onload == 'function')
  {
    //store it
    var existing = onload;
    //add new onload handler
    window.onload = function()
    {
      //call existing onload function
      existing();
      //call generic onload function
      generic();
    };
  }
  else
  {
    //setup onload function
    window.onload = generic;
  }
}


if (checkIfSVGavailable) {
  checkifSVGavailable = false;
  nd = isSVGavailable();
  ASnoSVG = nd!=null;
}
;
// $Id: script.js,v 1.1 2008/10/01 03:26:19 jwolf Exp $ 

Drupal.behaviors.tntIEFixes = function (context) {
  // IE6 & less-specific functions
  // Add hover class to primary menu li elements on hover
  if ($.browser.msie && ($.browser.version < 7)) {
    $('#primary-menu li').hover(function() {
      $(this).addClass('hover');
      }, function() {
        $(this).removeClass('hover');
    });
  };
};
;