diff --git a/2009/slidy.css b/2009/slidy.css
deleted file mode 100644
index e9ff532..0000000
--- a/2009/slidy.css
+++ /dev/null
@@ -1,277 +0,0 @@
-/* http://www.w3.org/Talks/Tools/Slidy/slidy.css
-
-   Copyright (c) 2005 W3C (MIT, ERCIM, Keio), All Rights Reserved.
-   W3C liability, trademark, document use and software licensing
-   rules apply, see:
-
-   http://www.w3.org/Consortium/Legal/copyright-documents
-   http://www.w3.org/Consortium/Legal/copyright-software
-*/
-body
-{
-  margin: 0 0 0 0;
-  padding: 0 0 0 0;
-  width: 100%;
-  height: 100%;
-  color: black;
-  background-color: white;
-  font-family: "Lucida Sans", "Lucida Grande", Lucida, sans-serif;
-  font-size: 14pt;
-}
-
-.hidden { display: none; visibility: hidden }
-
-div.toolbar {
-  position: fixed; z-index: 200;
-  top: auto; bottom: 0; left: 0; right: 0;
-  height: 1.2em; text-align: right;
-  padding-left: 1em;
-  padding-right: 1em; 
-  font-size: 60%;
-  color: red; background: rgb(240,240,240);
-}
-
-div.background {
-  display: none;
-}
-
-div.handout {
-  margin-left: 20px;
-  margin-right: 20px;
-}
-
-div.slide.titlepage {
-  color: white;
-  background: black;
-  text-align: center;
-}
-
-div.slide {
-  z-index: 20;
-  margin: 0 0 0 0;
-  padding-top: 0;
-  padding-bottom: 0;
-  padding-left: 20px;
-  padding-right: 20px;
-  border-width: 0;
-  top: 0;
-  bottom: 0;
-  left: 0;
-  right: 0;
-  line-height: 120%;
-  background-color: transparent;
-}
-
-/* this rule is hidden from IE 6 and below which don't support + selector */
-div.slide + div[class].slide { page-break-before: always;}
-
-div.slide h1 {
-  padding-left: 20px;
-  padding-right: 20px;
-  padding-top: 10px;
-  padding-bottom: 10px;
-  margin-top: 0;
-  margin-left: 0;
-  margin-right: 0;
-  margin-bottom: 0.5em;
-  border-bottom: 4px solid #36c;
-  display: block; 
-  font-size: 160%;
-  line-height: 1.2em;
-}
-
-div.slide h2 {
-  font-size:120%;
-  line-height: 1.2em;
-}
-
-div.toc {
-  position: absolute;
-  top: auto;
-  bottom: 4em;
-  left: 4em;
-  right: auto;
-  width: 60%;
-  max-width: 30em;
-  height: 30em;
-  border: solid thin black;
-  padding: 1em;
-  background: rgb(240,240,240);
-  color: black;
-  z-index: 300;
-  overflow: auto;
-  display: block;
-  visibility: visible;
-}
-
-div.toc-heading {
-  width: 100%;
-  border-bottom: solid 1px rgb(180,180,180);
-  margin-bottom: 1em;
-  text-align: center;
-}
-
-pre {
- font-size: 120%;
- font-weight: bold;
- line-height: 140%;
- padding-top: 0.2em;
- padding-bottom: 0.2em;
- padding-left: 1em;
- padding-right: 1em;
-/*
- border-style: solid;
- border-left-width: 1em;
- border-top-width: thin;
- border-right-width: thin;
- border-bottom-width: thin;
- border-color: #95ABD0;
-*/
- color: #0F398D;
- background-color: #fff8f8;
-}
-
-@media print {
-  div.slide {
-     display: block;
-     visibility: visible;
-     position: relative;
-     border-top-style: solid;
-     border-top-width: thin;
-     border-top-color: black;
-  }
-  div.slide pre { font-size: 60%; padding-left: 0.5em; }
-  div.handout { display: block; visibility: visible; }
-}
-
-blockquote { font-style: italic }
-
-img { background-color: transparent }
-
-p.copyright { font-size: smaller }
-
-.center { text-align: center }
-.footnote { font-size: smaller; margin-left: 2em; }
-
-a img { border-width: 0; border-style: none }
-
-a:visited { color: navy }
-a:link { color: navy }
-a:hover { color: red; text-decoration: underline }
-a:active { color: red; text-decoration: underline }
-
-a {text-decoration: none}
-.navbar a:link {color: white}
-.navbar a:visited {color: yellow}
-.navbar a:active {color: red}
-.navbar a:hover {color: red}
-
-ul { list-style-type: square; }
-ul ul { list-style-type: disc; }
-ul ul ul { list-style-type: circle; }
-ul ul ul ul { list-style-type: disc; }
-li { margin-left: 2em; margin-top: 0.5em; }
-li li { font-size: 85%; font-style: italic }
-li li li { font-size: 85%; font-style: normal }
-
-div dt
-{
-  margin-left: 0;
-  margin-top: 1em;
-  margin-bottom: 0.5em;
-  font-weight: bold;
-}
-div dd
-{
-  margin-left: 2em;
-  margin-bottom: 0.5em;
-}
-
-
-p,pre,ul,ol,blockquote,h2,h3,h4,h5,h6,dl,table {
-  margin-left: 1em;
-  margin-right: 1em;
-}
-
-p.subhead { font-weight: bold; margin-top: 2em; }
-
-p.smaller { font-size: smaller }
-
-td,th { padding: 0.2em }
-
-ul {
-  margin: 0.5em 1.5em 0.5em 1.5em;
-  padding: 0;
-}
-
-ol {
-  margin: 0.5em 1.5em 0.5em 1.5em;
-  padding: 0;
-}
-
-ul { list-style-type: square; }
-ul ul { list-style-type: disc; }
-ul ul ul { list-style-type: circle; }
-ul ul ul ul { list-style-type: disc; }
-
-ul li { 
-  list-style: square;
-  //margin: 0.1em 0em 0.6em 0;
-  padding: 0 0 0 0;
-  line-height: 140%;
-}
-
-ol li { 
-  margin: 0.1em 0em 0.6em 1.5em;
-  padding: 0 0 0 0px;
-  line-height: 140%;
-  list-style-type: decimal;
-}
-
-li ul li { 
-  font-size: 85%; 
-  font-style: italic;
-  list-style-type: disc;
-  background: transparent;
-  padding: 0 0 0 0;
-}
-li li ul li { 
-  font-size: 85%; 
-  font-style: normal;
-  list-style-type: circle;
-  background: transparent;
-  padding: 0 0 0 0;
-}
-li li li ul li {
-  list-style-type: disc;
-  background: transparent;
-  padding: 0 0 0 0;
-}
-
-li ol li {
-  list-style-type: decimal;
-}
-
-
-li li ol li {
-  list-style-type: decimal;
-}
-
-/*
- setting class="outline on ol or ul makes it behave as an
- ouline list where blocklevel content in li elements is
- hidden by default and can be expanded or collapsed with
- mouse click. Set class="expand" on li to override default
-*/
-
-ol.outline li:hover { cursor: pointer }
-ol.outline li.nofold:hover { cursor: default }
-
-ul.outline li:hover { cursor: pointer }
-ul.outline li.nofold:hover { cursor: default }
-
-ol.outline { list-style:decimal; }
-ol.outline ol { list-style-type:lower-alpha }
-
-/* for slides with class "title" in table of contents */
-a.titleslide { font-weight: bold; font-style: italic }
diff --git a/2009/slidy.js b/2009/slidy.js
deleted file mode 100644
index 6a5561a..0000000
--- a/2009/slidy.js
+++ /dev/null
@@ -1,2772 +0,0 @@
-/* http://www.w3.org/Talks/Tools/Slidy/slidy.js
-
-   Copyright (c) 2005 W3C (MIT, ERCIM, Keio), All Rights Reserved.
-   W3C liability, trademark, document use and software licensing
-   rules apply, see:
-
-   http://www.w3.org/Consortium/Legal/copyright-documents
-   http://www.w3.org/Consortium/Legal/copyright-software
-*/
-
-var ns_pos = (typeof window.pageYOffset!='undefined');
-var khtml = ((navigator.userAgent).indexOf("KHTML") >= 0 ? true : false);
-var opera = ((navigator.userAgent).indexOf("Opera") >= 0 ? true : false);
-var ie7 = (!ns_pos && navigator.userAgent.indexOf("MSIE 7") != -1);
-
-window.onload = startup; // equivalent to onload on body element
-
-// IE only event handlers to ensure all slides are printed
-// I don't yet know how to emulate these for other browsers
-window.onbeforeprint = beforePrint;
-window.onafterprint = afterPrint;
-
-// hack to hide slides while loading
-setTimeout(hideAll, 50);
-
-function hideAll()
-{
-  if (document.body)
-    document.body.style.visibility = "hidden";
-  else
-    setTimeout(hideAll, 50);
-}
-
-var slidenum = 0;     // integer slide count: 0, 1, 2, ...
-var slides;           // set to array of slide div's
-var slideNumElement;  // element containing slide number
-var notes;            // set to array of handout div's
-var backgrounds;      // set to array of background div's
-var toolbar;          // element containing toolbar
-var title;            // document title
-var lastShown = null; // last incrementally shown item
-var eos = null;       // span element for end of slide indicator
-var toc = null;       // table of contents
-var outline = null;   // outline element with the focus
-var selectedTextLen;  // length of drag selection on document
-
-var viewAll = 0;      // 1 to view all slides + handouts
-var wantToolbar = 1;   // 0 if toolbar isn't wanted
-var mouseClickEnabled = true;  // enables left click for next slide
-var scrollhack = 0;   // IE work around for position: fixed
-
-var helpAnchor;  // used for keyboard focus hack in showToolbar()
-var helpPage = "http://www.w3.org/Talks/Tools/Slidy/help.html";
-var helpText = "Navigate with mouse click, space bar, Cursor Left/Right, " +
-               "or Pg Up and Pg Dn. Use S and B to change font size.";
-
-var sizeIndex = 0;
-var sizeAdjustment = 0;
-var sizes = new Array("10pt", "12pt", "14pt", "16pt", "18pt", "20pt",
-                      "22pt", "24pt", "26pt", "28pt", "30pt", "32pt");
-
-var okayForIncremental = incrementalElementList();
-
-// needed for efficient resizing
-var lastWidth = 0;
-var lastHeight = 0;
-
-// Needed for cross browser support for relative width/height on
-// object elements. The work around is to save width/height attributes
-// and then to recompute absolute width/height dimensions on resizing
-var objects;
-
-// updated to language specified by html file
-var lang = "en";
-
-//var localize = {};
-
-// for each language there is an associative array
-var strings_es = {
-  "slide":"pág.",
-  "help?":"Ayuda",
-  "contents?":"Índice",
-  "table of contents":"tabla de contenidos",
-  "Table of Contents":"Tabla de Contenidos",
-  "restart presentation":"Reiniciar presentación",
-  "restart?":"Inicio"
-   };
-
-strings_es[helpText] =
-    "Utilice el ratón, barra espaciadora, teclas Izda/Dhca, " +
-    "o Re pág y Av pág. Use S y B para cambiar el tamaño de fuente.";
-
-var strings_nl = {
-  "slide":"pagina",
-  "help?":"Help?",
-  "contents?":"Inhoud?",
-  "table of contents":"inhoudsopgave",
-  "Table of Contents":"Inhoudsopgave",
-  "restart presentation":"herstart presentatie",
-  "restart?":"Herstart?"
-   };
-
-strings_nl[helpText] =
-    "Navigeer d.m.v. het muis, spatiebar, Links/Rechts toetsen, " +
-    "of PgUp en PgDn. Gebruik S en B om de karaktergrootte te veranderen.";
-
-var strings_de = {
-  "slide":"Seite",
-  "help?":"Hilfe",
-  "contents?":"Übersicht",
-  "table of contents":"Inhaltsverzeichnis",
-  "Table of Contents":"Inhaltsverzeichnis",
-  "restart presentation":"Präsentation neu starten",
-  "restart?":"Neustart"
-   };
-
-strings_de[helpText] =
-    "Benutzen Sie die Maus, Leerschlag, die Cursortasten links/rechts" +
-    "oder Page up/Page Down zum Wechseln der Seiten und S und B für die Schriftgrösse.";
-
-var strings_pl = {
-  "slide":"slajd",
-  "help?":"pomoc?",
-  "contents?":"spis treści?",
-  "table of contents":"spis treści",
-  "Table of Contents":"Spis Treści",
-  "restart presentation":"Restartuj prezentację",
-  "restart?":"restart?"
-   };
-
-strings_pl[helpText] =
-    "Zmieniaj slajdy klikając myszą, naciskając spację, strzałki lewo/prawo" +
-    "lub PgUp / PgDn. Użyj klawiszy S i B, aby zmienić rozmiar czczionki.";
-
-var strings_fr = {
-  "slide":"page",
-  "help?":"Aide",
-  "contents?":"Index",
-  "table of contents":"table des matières",
-  "Table of Contents":"Table des matières",
-  "restart presentation":"Recommencer l'exposé",
-  "restart?":"Début"
-  };
-
-strings_fr[helpText] =
-    "Naviguez avec la souris, la barre d'espace, les flèches" +
-    "gauche/droite ou les touches Pg Up, Pg Dn. Utilisez " +
-    "les touches S et B pour modifier la taille de la police.";
-
-var strings_hu = {
-  "slide":"oldal",
-  "help?":"segítség",
-  "contents?":"tartalom",
-  "table of contents":"tartalomjegyzék",
-  "Table of Contents":"Tartalomjegyzék",
-  "restart presentation":"bemutató újraindítása",
-  "restart?":"újraindítás"
-   };
-
-strings_hu[helpText] =
-    "Az oldalak közti lépkedéshez kattintson az egérrel, vagy használja a szóköz, a bal, vagy a jobb nyíl, " +
-    "illetve a Page Down, Page Up billentyűket. Az S és a B billentyűkkel változtathatja a szöveg méretét.";
-
-var strings_it = {
-  "slide":"pag.",
-  "help?":"Aiuto",
-  "contents?":"Indice",
-  "table of contents":"indice",
-  "Table of Contents":"Indice",
-  "restart presentation":"Ricominciare la presentazione",
-  "restart?":"Inizio"
-   };
-
-strings_it[helpText] =
-    "Navigare con mouse, barra spazio, frecce sinistra/destra o " +
-    "PgUp e PgDn. Usare S e B per cambiare la dimensione dei caratteri.";
-
-var strings_el = {
-  "slide":"σελίδα",
-  "help?":"βοήθεια;",
-  "contents?":"περιεχόμενα;",
-  "table of contents":"πίνακας περιεχομένων",
-  "Table of Contents":"Πίνακας Περιεχομένων",
-  "restart presentation":"επανεκκίνηση παρουσίασης",
-  "restart?":"επανεκκίνηση;"
-   };
-
-strings_el[helpText] =
-  "Πλοηγηθείτε με το κλίκ του ποντικιού, το space, τα βέλη αριστερά/δεξιά, " +
-  "ή Page Up και Page Down. Χρησιμοποιήστε τα πλήκτρα S και B για να αλλάξετε " +
-  "το μέγεθος της γραμματοσειράς.";
-
-var strings_ja = {
-  "slide":"スライド",
-  "help?":"ヘルプ",
-  "contents?":"目次",
-  "table of contents":"目次を表示",
-  "Table of Contents":"目次",
-  "restart presentation":"最初から再生",
-  "restart?":"最初から"
-};
-
-strings_ja[helpText] =
-    "マウス左クリック ・ スペース ・ 左右キー " +
-    "または Page Up ・ Page Downで操作， S ・ Bでフォントサイズ変更";
-
-
-// each such language array is declared in the localize array
-// used indirectly as in help.innerHTML = "help".localize();
-var localize = {
-     "es":strings_es,
-     "nl":strings_nl,
-     "de":strings_de,
-     "pl":strings_pl,
-     "fr":strings_fr,
-     "hu":strings_hu,
-     "it":strings_it,
-     "el":strings_el,
-     "jp":strings_ja
-   };
-
-/* general initialization */
-function startup()
-{
-   // find human language from html element
-   // for use in localizing strings
-   lang = document.body.parentNode.getAttribute("lang");
-
-   if (!lang)
-     lang = document.body.parentNode.getAttribute("xml:lang");
-
-   if (!lang)
-     lang = "en";
-
-   document.body.style.visibility = "visible";
-   title = document.title;
-   toolbar = addToolbar();
-   wrapImplicitSlides();
-   slides = collectSlides();
-   notes = collectNotes();
-   objects = document.body.getElementsByTagName("object");
-   backgrounds = collectBackgrounds();
-   patchAnchors();
-
-   slidenum = findSlideNumber(location.href);
-   window.offscreenbuffering = true;
-   sizeAdjustment = findSizeAdjust();
-   hideImageToolbar();  // suppress IE image toolbar popup
-   initOutliner();  // activate fold/unfold support
-
-   if (slides.length > 0)
-   {
-      var slide = slides[slidenum];
-      slide.style.position = "absolute";
-   
-      if (slidenum > 0)
-      {
-         setVisibilityAllIncremental("visible");
-         lastShown = previousIncrementalItem(null);
-         setEosStatus(true);
-      }
-      else
-      {
-         lastShown = null;
-         setVisibilityAllIncremental("hidden");
-         setEosStatus(!nextIncrementalItem(lastShown));
-      }
-
-      setLocation();
-   }
-
-   toc = tableOfContents();
-   hideTableOfContents();
-
-   // bind event handlers
-   document.onclick = mouseButtonClick;
-   document.onmouseup = mouseButtonUp;
-   document.onkeydown = keyDown;
-   window.onresize  = resized;
-   window.onscroll = scrolled;
-   singleSlideView();
-
-   setLocation();
-   resized();
-
-   if (ie7)
-     setTimeout("ieHack()", 100);
-
-   showToolbar();
-}
-
-// add localize method to all strings for use
-// as in help.innerHTML = "help".localize();
-String.prototype.localize = function()
-{
-  if (this == "")
-    return this;
-
-  // try full language code, e.g. en-US
-  var s, lookup = localize[lang];
-
-  if (lookup)
-  {
-    s = lookup[this];
-
-    if (s)
-      return s;
-  }
-
-  // try en if undefined for en-US
-  var lg = lang.split("-");
-
-  if (lg.length > 1)
-  {
-    lookup = localize[lg[0]];
-
-    if (lookup)
-    {
-      s = lookup[this];
-
-      if (s)
-        return s;
-    }
-  }
-
-  // otherwise string as is
-  return this;
-}
-
-// suppress IE's image toolbar pop up
-function hideImageToolbar()
-{
-  if (!ns_pos)
-  {
-    var images = document.getElementsByTagName("IMG");
-
-    for (var i = 0; i < images.length; ++i)
-      images[i].setAttribute("galleryimg", "no");
-  }
-}
-
-// hack to persuade IE to compute correct document height
-// as needed for simulating fixed positioning of toolbar
-function ieHack()
-{
-   window.resizeBy(0,-1);
-   window.resizeBy(0, 1);
-}
-
-// Firefox reload SVG bug work around
-function reload(e)
-{
-   if (!e)
-      var e = window.event;
-
-   hideBackgrounds();
-   setTimeout("document.reload();", 100);
-
-   stopPropagation(e);
-   e.cancel = true;
-   e.returnValue = false;
-
-   return false;
-}
-
-// Safari and Konqueror don't yet support getComputedStyle()
-// and they always reload page when location.href is updated
-function isKHTML()
-{
-   var agent = navigator.userAgent;
-   return (agent.indexOf("KHTML") >= 0 ? true : false);
-}
-
-function resized()
-{
-   var width = 0;
-
-   if ( typeof( window.innerWidth ) == 'number' )
-      width = window.innerWidth;  // Non IE browser
-   else if (document.documentElement && document.documentElement.clientWidth)
-      width = document.documentElement.clientWidth;  // IE6
-   else if (document.body && document.body.clientWidth)
-      width = document.body.clientWidth; // IE4
-
-   var height = 0;
-
-   if ( typeof( window.innerHeight ) == 'number' )
-      height = window.innerHeight;  // Non IE browser
-   else if (document.documentElement && document.documentElement.clientHeight)
-      height = document.documentElement.clientHeight;  // IE6
-   else if (document.body && document.body.clientHeight)
-      height = document.body.clientHeight; // IE4
-
-   if (height && (width/height > 1.05*1024/768))
-   {
-     width = height * 1024.0/768;
-   }
-
-   // IE fires onresize even when only font size is changed!
-   // so we do a check to avoid blocking < and > actions
-   if (width != lastWidth || height != lastHeight)
-   {
-      if (width >= 1100)
-         sizeIndex = 5;    // 4
-      else if (width >= 1000)
-         sizeIndex = 4;    // 3
-      else if (width >= 800)
-         sizeIndex = 3;    // 2
-      else if (width >= 600)
-         sizeIndex = 2;    // 1
-      else if (width)
-         sizeIndex = 0;
-
-      // add in font size adjustment from meta element e.g.
-      // <meta name="font-size-adjustment" content="-2" />
-      // useful when slides have too much content ;-)
-
-      if (0 <= sizeIndex + sizeAdjustment &&
-             sizeIndex + sizeAdjustment < sizes.length)
-        sizeIndex = sizeIndex + sizeAdjustment;
-
-      // enables cross browser use of relative width/height
-      // on object elements for use with SVG and Flash media
-      adjustObjectDimensions(width, height);
-
-      document.body.style.fontSize = sizes[sizeIndex];
-
-      lastWidth = width;
-      lastHeight = height;
-
-      // force reflow to work around Mozilla bug
-      //if (ns_pos)
-      {
-         var slide = slides[slidenum];
-         hideSlide(slide);
-         showSlide(slide);
-      }
-
-      // force correct positioning of toolbar
-      refreshToolbar(200);
-   }
-}
-
-function scrolled()
-{
-   if (toolbar && !ns_pos && !ie7)
-   {
-      hackoffset = scrollXOffset();
-      // hide toolbar
-      toolbar.style.display = "none";
-
-      // make it reappear later
-      if (scrollhack == 0 && !viewAll)
-      {
-         setTimeout(showToolbar, 1000);
-         scrollhack = 1;
-      }
-   }
-}
-
-// used to ensure IE refreshes toolbar in correct position
-function refreshToolbar(interval)
-{
-   if (!ns_pos && !ie7)
-   {
-     hideToolbar();
-     setTimeout(showToolbar, interval);
-   }
-}
-
-// restores toolbar after short delay
-function showToolbar()
-{
-   if (wantToolbar)
-   {
-      if (!ns_pos)
-      {
-         // adjust position to allow for scrolling
-         var xoffset = scrollXOffset();
-         toolbar.style.left = xoffset;
-         toolbar.style.right = xoffset;
-
-         // determine vertical scroll offset
-         //var yoffset = scrollYOffset();
-
-         // bottom is doc height - window height - scroll offset
-         //var bottom = documentHeight() - lastHeight - yoffset
-
-         //if (yoffset > 0 || documentHeight() > lastHeight)
-         //   bottom += 16;  // allow for height of scrollbar
-
-         toolbar.style.bottom = 0; //bottom;
-      }
-
-      toolbar.style.display = "block";
-      toolbar.style.visibility = "visible";
-   }
-
-   scrollhack = 0;
-
-
-   // set the keyboard focus to the help link on the
-   // toolbar to ensure that document has the focus
-   // IE doesn't always work with window.focus()
-   // and this hack has benefit of Enter for help
-
-   try
-   {
-     if (!opera)
-       helpAnchor.focus();
-   }
-   catch (e)
-   {
-   }
-}
-
-function test()
-{
-   var s = "docH: " + documentHeight() +
-       " winH: " + lastHeight +
-       " yoffset: " + scrollYOffset() +
-       " toolbot: " + (documentHeight() - lastHeight - scrollYOffset());
-
-   //alert(s);
-
-   var slide = slides[slidenum];
-   // IE getAttribute requires "class" to be "className"
-   var name = ns_pos ? "class" : "className";
-   var style = (slide.currentStyle ? slide.currentStyle["backgroundColor"] :
-       document.defaultView.getComputedStyle(slide, '').getPropertyValue("background-color"));
-   alert("class='" + slide.getAttribute(name) + "' backgroundColor: " + style);
-}
-
-function hideToolbar()
-{
-   toolbar.style.display = "none";
-   toolbar.style.visibility = "hidden";
-   window.focus();
-}
-
-// invoked via F key
-function toggleToolbar()
-{
-   if (!viewAll)
-   {
-      if (toolbar.style.display == "none")
-      {
-         toolbar.style.display = "block";
-         toolbar.style.visibility = "visible";
-         wantToolbar = 1;
-      }
-      else
-      {
-         toolbar.style.display = "none";
-         toolbar.style.visibility = "hidden";
-         wantToolbar = 0;
-      }
-   }
-}
-
-function scrollXOffset()
-{
-   if (window.pageXOffset)
-      return self.pageXOffset;
-
-   if (document.documentElement && 
-             document.documentElement.scrollLeft)
-      return document.documentElement.scrollLeft;
-
-   if (document.body)
-      return document.body.scrollLeft;
-
-    return 0;
-}
-
-
-function scrollYOffset()
-{
-   if (window.pageYOffset)
-      return self.pageYOffset;
-
-   if (document.documentElement && 
-             document.documentElement.scrollTop)
-      return document.documentElement.scrollTop;
-
-   if (document.body)
-      return document.body.scrollTop;
-
-    return 0;
-}
-
-// looking for a way to determine height of slide content
-// the slide itself is set to the height of the window
-function optimizeFontSize()
-{
-   var slide = slides[slidenum];
-
-   //var dh = documentHeight(); //getDocHeight(document);
-   var dh = slide.scrollHeight;
-   var wh = getWindowHeight();
-   var u = 100 * dh / wh;
-
-   alert("window utilization = " + u + "% (doc "
-      + dh + " win " + wh + ")");
-}
-
-function getDocHeight(doc) // from document object
-{
-  if (!doc)
-    doc = document;
-
-  if (doc && doc.body && doc.body.offsetHeight)
-    return doc.body.offsetHeight;  // ns/gecko syntax
-
-  if (doc && doc.body && doc.body.scrollHeight)
-    return doc.body.scrollHeight;
-
-  alert("couldn't determine document height");
-}
-
-function getWindowHeight()
-{
-  if ( typeof( window.innerHeight ) == 'number' )
-    return window.innerHeight;  // Non IE browser
-
-  if (document.documentElement && document.documentElement.clientHeight)
-    return document.documentElement.clientHeight;  // IE6
-
-  if (document.body && document.body.clientHeight)
-    return document.body.clientHeight; // IE4
-}
-
-
-
-function documentHeight()
-{
-   var sh, oh;
-
-   sh = document.body.scrollHeight;
-   oh = document.body.offsetHeight;
-
-   if (sh && oh)
-   {
-      return (sh > oh ? sh : oh);
-   }
-
-   // no idea!
-   return 0;
-}
-
-function smaller()
-{
-   if (sizeIndex > 0)
-   {
-      --sizeIndex;
-   }
-
-   toolbar.style.display = "none";
-   document.body.style.fontSize = sizes[sizeIndex];
-   var slide = slides[slidenum];
-   hideSlide(slide);
-   showSlide(slide);
-   setTimeout(showToolbar, 300);
-}
-
-function bigger()
-{
-   if (sizeIndex < sizes.length - 1)
-   {
-      ++sizeIndex;
-   }
-
-   toolbar.style.display = "none";
-   document.body.style.fontSize = sizes[sizeIndex];
-   var slide = slides[slidenum];
-   hideSlide(slide);
-   showSlide(slide);
-   setTimeout(showToolbar, 300);
-}
-
-// enables cross browser use of relative width/height
-// on object elements for use with SVG and Flash media
-// with thanks to Ivan Herman for the suggestion
-function adjustObjectDimensions(width, height)
-{
-   for( var i = 0; i < objects.length; i++ )
-   {
-      var obj = objects[i];
-      var mimeType = obj.getAttribute("type");
-
-      if (mimeType == "image/svg+xml" || mimeType == "application/x-shockwave-flash")
-      {
-         if ( !obj.initialWidth ) 
-            obj.initialWidth = obj.getAttribute("width");
-
-         if ( !obj.initialHeight ) 
-            obj.initialHeight = obj.getAttribute("height");
-
-         if ( obj.initialWidth && obj.initialWidth.charAt(obj.initialWidth.length-1) == "%" )
-         {
-            var w = parseInt(obj.initialWidth.slice(0, obj.initialWidth.length-1));
-            var newW = width * (w/100.0);
-            obj.setAttribute("width",newW);
-         }
-
-         if ( obj.initialHeight && obj.initialHeight.charAt(obj.initialHeight.length-1) == "%" )
-         {
-            var h = parseInt(obj.initialHeight.slice(0, obj.initialHeight.length-1));
-            var newH = height * (h/100.0);
-            obj.setAttribute("height", newH);
-         }
-      }
-   }
-}
-
-function cancel(event)
-{
-  if (event)
-  {
-     event.cancel = true;
-     event.returnValue = false;
-
-    if (event.preventDefault)
-      event.preventDefault();
-  }
-
-  return false;
-}
-
-//  See e.g. http://www.quirksmode.org/js/events/keys.html for keycodes
-function keyDown(event)
-{
-    var key;
-
-    if (!event)
-      var event = window.event;
-
-    // kludge around NS/IE differences 
-    if (window.event)
-       key = window.event.keyCode;
-    else if (event.which)
-       key = event.which;
-    else
-       return true; // Yikes! unknown browser
-
-    // ignore event if key value is zero
-    // as for alt on Opera and Konqueror
-    if (!key)
-       return true;
-
-    // check for concurrent control/command/alt key
-    // but are these only present on mouse events?
-
-    if (event.ctrlKey || event.altKey || event.metaKey)
-       return true;
-
-    // dismiss table of contents if visible
-    if (isShownToc() && key != 9 && key != 16 && key != 38 && key != 40)
-    {
-      hideTableOfContents();
-
-      if (key == 27 || key == 84 || key == 67)
-        return cancel(event);
-    }
-
-    if (key == 34) // Page Down
-    {
-       nextSlide(false);
-       return cancel(event);
-    }
-    else if (key == 33) // Page Up
-    {
-       previousSlide(false);
-       return cancel(event);
-    }
-    else if (key == 32) // space bar
-    {
-       nextSlide(true);
-       return cancel(event);
-    }
-    else if (key == 37 || key == 38) // Left arrow || Up arrow
-    {
-       previousSlide(!event.shiftKey);
-       return cancel(event);
-    }
-    else if (key == 36) // Home
-    {
-       firstSlide();
-       return cancel(event);
-    }
-    else if (key == 35) // End
-    {
-       lastSlide();
-       return cancel(event);
-    }
-    else if (key == 39 || key == 40) // Right arrow || Down arrow
-    {
-       nextSlide(!event.shiftKey);
-       return cancel(event);
-    }
-    else if (key == 13) // Enter
-    {
-       if (outline)
-       {
-          if (outline.visible)
-            fold(outline);
-          else
-            unfold(outline);
-          
-         return cancel(event);
-       }
-    }
-    else if (key == 188)  // < for smaller fonts
-    {
-       smaller();
-       return cancel(event);
-    }
-    else if (key == 190)  // > for larger fonts
-    {
-       bigger();
-       return cancel(event);
-    }
-    else if (key == 189 || key == 109)  // - for smaller fonts
-    {
-       smaller();
-       return cancel(event);
-    }
-    else if (key == 187 || key == 191 || key == 107)  // = +  for larger fonts
-    {
-       bigger();
-       return cancel(event);
-    }
-    else if (key == 83)  // S for smaller fonts
-    {
-       smaller();
-       return cancel(event);
-    }
-    else if (key == 66)  // B for larger fonts
-    {
-       bigger();
-       return cancel(event);
-    }
-    else if (key == 90)  // Z for last slide
-    {
-       lastSlide();
-       return cancel(event);
-    }
-    else if (key == 70)  // F for toggle toolbar
-    {
-       toggleToolbar();
-       return cancel(event);
-    }
-    else if (key == 65)  // A for toggle view single/all slides
-    {
-       toggleView();
-       return cancel(event);
-    }
-    else if (key == 75)  // toggle action of left click for next page
-    {
-       mouseClickEnabled = !mouseClickEnabled;
-       alert((mouseClickEnabled ? "enabled" : "disabled") +  " mouse click advance");
-       return cancel(event);
-    }
-    else if (key == 84 || key == 67)  // T or C for table of contents
-    {
-       if (toc)
-         showTableOfContents();
-
-       return cancel(event);
-    }
-    else if (key == 72) // H for help
-    {
-       window.location = helpPage;
-       return cancel(event);
-    }
-
-    //else if (key == 93) // Windows menu key
-      //alert("lastShown is " + lastShown);
-    //else alert("key code is "+ key);
-
-
-    return true;
-}
-
-// make note of length of selected text
-// as this evaluates to zero in click event
-function mouseButtonUp(e)
-{
-  selectedTextLen = getSelectedText().length;
-}
-
-// right mouse button click is reserved for context menus
-// it is more reliable to detect rightclick than leftclick
-function mouseButtonClick(e)
-{
-   var rightclick = false;
-   var leftclick = false;
-   var middleclick = false;
-   var target;
-
-   if (!e)
-      var e = window.event;
-
-   if (e.target)
-      target = e.target;
-   else if (e.srcElement)
-      target = e.srcElement;
-
-   // work around Safari bug
-   if (target.nodeType == 3)
-      target = target.parentNode;
-
-   if (e.which) // all browsers except IE
-   {
-      leftclick = (e.which == 1);
-      middleclick = (e.which == 2);
-      rightclick = (e.which == 3);
-   }
-   else if (e.button)
-   {
-      // Konqueror gives 1 for left, 4 for middle
-      // IE6 gives 0 for left and not 1 as I expected
-
-      if (e.button == 4)
-        middleclick = true;
-
-      // all browsers agree on 2 for right button
-      rightclick = (e.button == 2);
-   }
-   else leftclick = true;
-
-   // dismiss table of contents
-   hideTableOfContents();
-
-   if (selectedTextLen > 0)
-   {
-      stopPropagation(e);
-      e.cancel = true;
-      e.returnValue = false;
-      return false;
-   }
-
-   // check if target is something that probably want's clicks
-   // e.g. embed, object, input, textarea, select, option
-
-   if (mouseClickEnabled && leftclick &&
-        target.nodeName != "EMBED" &&
-        target.nodeName != "OBJECT" &&
-        target.nodeName != "INPUT" &&
-        target.nodeName != "TEXTAREA" &&
-        target.nodeName != "SELECT" &&
-        target.nodeName != "OPTION")
-   {
-      nextSlide(true);
-      stopPropagation(e);
-      e.cancel = true;
-      e.returnValue = false;
-   }
-}
-
-function previousSlide(incremental)
-{
-   if (!viewAll)
-   {
-      var slide;
-
-      if ((incremental || slidenum == 0) && lastShown != null)
-      {
-         lastShown = hidePreviousItem(lastShown);
-         setEosStatus(false);
-      }
-      else if (slidenum > 0)
-      {
-         slide = slides[slidenum];
-         hideSlide(slide);
-
-         slidenum = slidenum - 1;
-         slide = slides[slidenum];
-         setVisibilityAllIncremental("visible");
-         lastShown = previousIncrementalItem(null);
-         setEosStatus(true);
-         showSlide(slide);
-      }
-
-      setLocation();
-
-      if (!ns_pos)
-         refreshToolbar(200);
-   }
-}
-
-function nextSlide(incremental)
-{
-   if (!viewAll)
-   {
-      var slide, last = lastShown;
-
-      if (incremental || slidenum == slides.length - 1)
-         lastShown = revealNextItem(lastShown);
-
-      if ((!incremental || lastShown == null) && slidenum < slides.length - 1)
-      {
-         slide = slides[slidenum];
-         hideSlide(slide);
-
-         slidenum = slidenum + 1;
-         slide = slides[slidenum];
-         lastShown = null;
-         setVisibilityAllIncremental("hidden");
-         showSlide(slide);
-      }
-      else if (!lastShown)
-      {
-         if (last && incremental)
-           lastShown = last;
-      }
-
-      setLocation();
-
-      setEosStatus(!nextIncrementalItem(lastShown));
-
-      if (!ns_pos)
-         refreshToolbar(200);
-   }
-}
-
-// to first slide with nothing revealed
-// i.e. state at start of presentation
-function firstSlide()
-{
-   if (!viewAll)
-   {
-      var slide;
-
-      if (slidenum != 0)
-      {
-         slide = slides[slidenum];
-         hideSlide(slide);
-
-         slidenum = 0;
-         slide = slides[slidenum];
-         lastShown = null;
-         setVisibilityAllIncremental("hidden");
-         showSlide(slide);
-      }
-
-      setEosStatus(!nextIncrementalItem(lastShown));
-      setLocation();
-   }
-}
-
-
-// to last slide with everything revealed
-// i.e. state at end of presentation
-function lastSlide()
-{
-   if (!viewAll)
-   {
-      var slide;
-
-      lastShown = null; //revealNextItem(lastShown);
-
-      if (lastShown == null && slidenum < slides.length - 1)
-      {
-         slide = slides[slidenum];
-         hideSlide(slide);
-         slidenum = slides.length - 1;
-         slide = slides[slidenum];
-         setVisibilityAllIncremental("visible");
-         lastShown = previousIncrementalItem(null);
-
-         showSlide(slide);
-      }
-      else
-      {
-         setVisibilityAllIncremental("visible");
-         lastShown = previousIncrementalItem(null);
-      }
-
-      setEosStatus(true);
-      setLocation();
-   }
-}
-
-function setEosStatus(state)
-{
-   if (eos)
-      eos.style.color = (state ? "rgb(240,240,240)" : "red");
-}
-
-function showSlide(slide)
-{
-   syncBackground(slide);
-   window.scrollTo(0,0);
-   slide.style.visibility = "visible";
-   slide.style.display = "block";
-}
-
-function hideSlide(slide)
-{
-   slide.style.visibility = "hidden";
-   slide.style.display = "none";
-}
-
-function beforePrint()
-{
-   showAllSlides();
-   hideToolbar();
-}
-
-function afterPrint()
-{
-   if (!viewAll)
-   {
-      singleSlideView();
-      showToolbar();
-   }
-}
-
-function printSlides()
-{
-  beforePrint();
-  window.print();
-  afterPrint();
-}
-
-function toggleView()
-{
-   if (viewAll)
-   {
-      singleSlideView();
-      showToolbar();
-      viewAll = 0;
-   }
-   else
-   {
-      showAllSlides();
-      hideToolbar();
-      viewAll = 1;
-   }
-}
-
-// prepare for printing
-function showAllSlides()
-{
-   var slide;
-
-   for (var i = 0; i < slides.length; ++i)
-   {
-      slide = slides[i];
-
-      slide.style.position = "relative";
-      slide.style.borderTopStyle = "solid";
-      slide.style.borderTopWidth = "thin";
-      slide.style.borderTopColor = "black";
-
-      try {
-        if (i == 0)
-          slide.style.pageBreakBefore = "avoid";
-        else
-          slide.style.pageBreakBefore = "always";
-      }
-      catch (e)
-      {
-        //do nothing
-      }
-
-      setVisibilityAllIncremental("visible");
-      showSlide(slide);
-   }
-
-   var note;
-
-   for (var i = 0; i < notes.length; ++i)
-   {
-      showSlide(notes[i]);
-   }
-
-   // no easy way to render background under each slide
-   // without duplicating the background divs for each slide
-   // therefore hide backgrounds to avoid messing up slides
-   hideBackgrounds();
-}
-
-// restore after printing
-function singleSlideView()
-{
-   var slide;
-
-   for (var i = 0; i < slides.length; ++i)
-   {
-      slide = slides[i];
-
-      slide.style.position = "absolute";
-
-      if (i == slidenum)
-      {
-         slide.style.borderStyle = "none";
-         showSlide(slide);
-      }
-      else
-      {
-         slide.style.borderStyle = "none";
-         hideSlide(slide);
-      }
-   }
-
-   setVisibilityAllIncremental("visible");
-   lastShown = previousIncrementalItem(null);
-
-   var note;
-
-   for (var i = 0; i < notes.length; ++i)
-   {
-      hideSlide(notes[i]);
-   }
-}
-
-// the string str is a whitespace separated list of tokens
-// test if str contains a particular token, e.g. "slide"
-function hasToken(str, token)
-{
-   if (str)
-   {
-      // define pattern as regular expression
-      var pattern = /\w+/g;
-
-      // check for matches
-      // place result in array
-      var result = str.match(pattern);
-
-      // now check if desired token is present
-      for (var i = 0; i < result.length; i++)
-      {
-         if (result[i] == token)
-            return true;
-      }
-   }
-
-   return false;
-}
-
-function getClassList(element)
-{
-  if (typeof window.pageYOffset =='undefined')
-    return element.getAttribute("className");
-
-  return element.getAttribute("class");
-}
-
-function hasClass(element, name)
-{
-  var regexp = new RegExp("(^| )" + name + "\W*");
-
-  if (regexp.test(getClassList(element)))
-    return true;
-
-  return false;
-
-}
-
-function removeClass(element, name)
-{
-  // IE getAttribute requires "class" to be "className"
-  var clsname = ns_pos ? "class" : "className";
-  var clsval = element.getAttribute(clsname);
-
-  var regexp = new RegExp("(^| )" + name + "\W*");
-
-  if (clsval)
-  {
-    clsval = clsval.replace(regexp, "");
-    element.setAttribute(clsname, clsval);
-  }
-}
-
-function addClass(element, name)
-{
-  if (!hasClass(element, name))
-  {
-    // IE getAttribute requires "class" to be "className"
-    var clsname = ns_pos ? "class" : "className";
-    var clsval = element.getAttribute(clsname);
-    element.setAttribute(clsname, (clsval ? clsval + " " + name : name));
-  }
-}
-
-// wysiwyg editors make it hard to use div elements
-// e.g. amaya loses the div when you copy and paste
-// this function wraps div elements around implicit
-// slides which start with an h1 element and continue
-// up to the next heading or div element
-function wrapImplicitSlides()
-{
-   var i, heading, node, next, div;
-   var headings = document.getElementsByTagName("h1");
-
-   if (!headings)
-     return;
-
-   for (i = 0; i < headings.length; ++i)
-   {
-      heading = headings[i];
-
-      if (heading.parentNode != document.body)
-         continue;
-
-      node = heading.nextSibling;
-
-      div = document.createElement("div");
-      div.setAttribute((ns_pos ? "class" : "className"), "slide");
-      document.body.replaceChild(div, heading);
-      div.appendChild(heading);
-
-      while (node)
-      {
-         if (node.nodeType == 1 &&    // an element
-                  (node.nodeName == "H1" ||
-                   node.nodeName == "h1" ||
-                   node.nodeName == "DIV" ||
-                   node.nodeName == "div"))
-            break;
-
-         next = node.nextSibling;
-         node = document.body.removeChild(node);
-         div.appendChild(node);
-         node = next;
-      } 
-   }
-}
-
-// return new array of all slides
-function collectSlides()
-{
-   var slides = new Array();
-   var divs = document.body.getElementsByTagName("div");
-
-   for (var i = 0; i < divs.length; ++i)
-   {
-      div = divs.item(i);
-
-      if (hasClass(div, "slide"))
-      {
-         // add slide to collection
-         slides[slides.length] = div;
-
-         // hide each slide as it is found
-         div.style.display = "none";
-         div.style.visibility = "hidden";
-
-         // add dummy <br/> at end for scrolling hack
-         var node1 = document.createElement("br");
-         div.appendChild(node1);
-         var node2 = document.createElement("br");
-         div.appendChild(node2);
-      }
-      else if (hasClass(div, "background"))
-      {  // work around for Firefox SVG reload bug
-         // which otherwise replaces 1st SVG graphic with 2nd
-         div.style.display = "block";
-      }
-   }
-
-   return slides;
-}
-
-// return new array of all <div class="handout">
-function collectNotes()
-{
-   var notes = new Array();
-   var divs = document.body.getElementsByTagName("div");
-
-   for (var i = 0; i < divs.length; ++i)
-   {
-      div = divs.item(i);
-
-      if (hasClass(div, "handout"))
-      {
-         // add slide to collection
-         notes[notes.length] = div;
-
-         // hide handout notes as they are found
-         div.style.display = "none";
-         div.style.visibility = "hidden";
-      }
-   }
-
-   return notes;
-}
-
-// return new array of all <div class="background">
-// including named backgrounds e.g. class="background titlepage"
-function collectBackgrounds()
-{
-   var backgrounds = new Array();
-   var divs = document.body.getElementsByTagName("div");
-
-   for (var i = 0; i < divs.length; ++i)
-   {
-      div = divs.item(i);
-
-      if (hasClass(div, "background"))
-      {
-         // add slide to collection
-         backgrounds[backgrounds.length] = div;
-
-         // hide named backgrounds as they are found
-         // e.g. class="background epilog"
-         if (getClassList(div) != "background")
-         {
-            div.style.display = "none";
-            div.style.visibility = "hidden";
-         }
-      }
-   }
-
-   return backgrounds;
-}
-
-// show just the backgrounds pertinent to this slide
-function syncBackground(slide)
-{
-   var background;
-   var bgColor;
-
-   if (slide.currentStyle)
-      bgColor = slide.currentStyle["backgroundColor"];
-   else if (document.defaultView)
-   {
-      var styles = document.defaultView.getComputedStyle(slide,null);
-
-      if (styles)
-          bgColor = styles.getPropertyValue("background-color");
-      else // broken implementation probably due Safari or Konqueror
-      {
-          //alert("defective implementation of getComputedStyle()");
-          bgColor = "transparent";
-      }
-   }
-   else
-      bgColor == "transparent";
-
-   if (bgColor == "transparent")
-   {
-      var slideClass = getClassList(slide);
-
-      for (var i = 0; i < backgrounds.length; i++)
-      {
-         background = backgrounds[i];
-
-         var bgClass = getClassList(background);
-
-         if (matchingBackground(slideClass, bgClass))
-         {
-            background.style.display = "block";
-            background.style.visibility = "visible";
-         }
-         else
-         {
-            background.style.display = "none";
-            background.style.visibility = "hidden";
-         }
-      }
-   }
-   else // forcibly hide all backgrounds
-      hideBackgrounds();
-}
-
-function hideBackgrounds()
-{
-   for (var i = 0; i < backgrounds.length; i++)
-   {
-      background = backgrounds[i];
-      background.style.display = "none";
-      background.style.visibility = "hidden";
-   }
-}
-
-// compare classes for slide and background
-function matchingBackground(slideClass, bgClass)
-{
-   if (bgClass == "background")
-      return true;
-
-   // define pattern as regular expression
-   var pattern = /\w+/g;
-
-   // check for matches and place result in array
-   var result = slideClass.match(pattern);
-
-   // now check if desired name is present for background
-   for (var i = 0; i < result.length; i++)
-   {
-      if (hasToken(bgClass, result[i]))
-         return true;
-   }
-
-   return false;
-}
-
-// left to right traversal of root's content
-function nextNode(root, node)
-{
-   if (node == null)
-      return root.firstChild;
-
-   if (node.firstChild)
-      return node.firstChild;
-
-   if (node.nextSibling)
-      return node.nextSibling;
-
-   for (;;)
-   {
-      node = node.parentNode;
-
-      if (!node || node == root)
-         break;
-
-      if (node && node.nextSibling)
-         return node.nextSibling;
-   }
-
-   return null;
-}
-
-// right to left traversal of root's content
-function previousNode(root, node)
-{
-   if (node == null)
-   {
-      node = root.lastChild;
-
-      if (node)
-      {
-         while (node.lastChild)
-            node = node.lastChild;
-      }
-
-      return node;
-   }
-
-   if (node.previousSibling)
-   {
-      node = node.previousSibling;
-
-      while (node.lastChild)
-         node = node.lastChild;
-
-      return node;
-   }
-
-   if (node.parentNode != root)
-      return node.parentNode;
-
-   return null;
-}
-
-// HTML elements that can be used with class="incremental"
-// note that you can also put the class on containers like
-// up, ol, dl, and div to make their contents appear
-// incrementally. Upper case is used since this is what
-// browsers report for HTML node names (text/html).
-function incrementalElementList()
-{
-   var inclist = new Array();
-   inclist["P"] = true;
-   inclist["PRE"] = true;
-   inclist["LI"] = true;
-   inclist["BLOCKQUOTE"] = true;
-   inclist["DT"] = true;
-   inclist["DD"] = true;
-   inclist["H2"] = true;
-   inclist["H3"] = true;
-   inclist["H4"] = true;
-   inclist["H5"] = true;
-   inclist["H6"] = true;
-   inclist["SPAN"] = true;
-   inclist["ADDRESS"] = true;
-   inclist["TABLE"] = true;
-   inclist["TR"] = true;
-   inclist["TH"] = true;
-   inclist["TD"] = true;
-   inclist["IMG"] = true;
-   inclist["OBJECT"] = true;
-   return inclist;
-}
-
-function nextIncrementalItem(node)
-{
-   var slide = slides[slidenum];
-
-   for (;;)
-   {
-      node = nextNode(slide, node);
-
-      if (node == null || node.parentNode == null)
-         break;
-
-      if (node.nodeType == 1)  // ELEMENT
-      {
-         if (node.nodeName == "BR")
-           continue;
-
-         if (hasClass(node, "incremental")
-             && okayForIncremental[node.nodeName])
-            return node;
-
-         if (hasClass(node.parentNode, "incremental")
-             && !hasClass(node, "non-incremental"))
-            return node;
-      }
-   }
-
-   return node;
-}
-
-function previousIncrementalItem(node)
-{
-   var slide = slides[slidenum];
-
-   for (;;)
-   {
-      node = previousNode(slide, node);
-
-      if (node == null || node.parentNode == null)
-         break;
-
-      if (node.nodeType == 1)
-      {
-         if (node.nodeName == "BR")
-           continue;
-
-         if (hasClass(node, "incremental")
-             && okayForIncremental[node.nodeName])
-            return node;
-
-         if (hasClass(node.parentNode, "incremental")
-             && !hasClass(node, "non-incremental"))
-            return node;
-      }
-   }
-
-   return node;
-}
-
-// set visibility for all elements on current slide with
-// a parent element with attribute class="incremental"
-function setVisibilityAllIncremental(value)
-{
-   var node = nextIncrementalItem(null);
-
-   while (node)
-   {
-      node.style.visibility = value;
-      node = nextIncrementalItem(node);
-   }
-}
-
-// reveal the next hidden item on the slide
-// node is null or the node that was last revealed
-function revealNextItem(node)
-{
-   node = nextIncrementalItem(node);
-
-   if (node && node.nodeType == 1)  // an element
-      node.style.visibility = "visible";
-
-   return node;
-}
-
-
-// exact inverse of revealNextItem(node)
-function hidePreviousItem(node)
-{
-   if (node && node.nodeType == 1)  // an element
-      node.style.visibility = "hidden";
-
-   return previousIncrementalItem(node);
-}
-
-
-/* set click handlers on all anchors */
-function patchAnchors()
-{
-   var anchors = document.body.getElementsByTagName("a");
-
-   for (var i = 0; i < anchors.length; ++i)
-   {
-      anchors[i].onclick = clickedAnchor;
-   }
-}
-
-function clickedAnchor(e)
-{
-   if (!e)
-      var e = window.event;
-
-   // compare this.href with location.href
-   // for link to another slide in this doc
-
-   if (pageAddress(this.href) == pageAddress(location.href))
-   {
-      // yes, so find new slide number
-      var newslidenum = findSlideNumber(this.href);
-
-      if (newslidenum != slidenum)
-      {
-         slide = slides[slidenum];
-         hideSlide(slide);
-         slidenum = newslidenum;
-         slide = slides[slidenum];
-         showSlide(slide);
-         setLocation();
-      }
-   }
-   else if (this.target == null)
-      location.href = this.href;
-
-   this.blur();
-   stopPropagation(e);
-}
-
-function pageAddress(uri)
-{
-   var i = uri.indexOf("#");
-
-   // check if anchor is entire page
-
-   if (i < 0)
-      return uri;  // yes
-
-   return uri.substr(0, i);
-}
-
-function showSlideNumber()
-{
-   slideNumElement.innerHTML = "slide".localize() + " " +
-           (slidenum + 1) + "/" + slides.length;
-}
-
-function setLocation()
-{
-   var uri = pageAddress(location.href);
-
-   //if (slidenum > 0)
-      uri = uri + "#(" + (slidenum+1) + ")";
-
-   if (uri != location.href && !khtml)
-      location.href = uri;
-
-   document.title = title + " (" + (slidenum+1) + ")";
-   //document.title = (slidenum+1) + ") " + slideName(slidenum);
-
-   showSlideNumber();
-}
-
-// find current slide based upon location
-// first find target anchor and then look
-// for associated div element enclosing it
-// finally map that to slide number
-function findSlideNumber(uri)
-{
-   // first get anchor from page location
-
-   var i = uri.indexOf("#");
-
-   // check if anchor is entire page
-
-   if (i < 0)
-      return 0;  // yes
-
-   var anchor = unescape(uri.substr(i+1));
-
-   // now use anchor as XML ID to find target
-   var target = document.getElementById(anchor);
-
-   if (!target)
-   {
-      // does anchor look like "(2)" for slide 2 ??
-      // where first slide is (1)
-      var re = /\((\d)+\)/;
-
-      if (anchor.match(re))
-      {
-         var num = parseInt(anchor.substring(1, anchor.length-1));
-
-         if (num > slides.length)
-            num = 1;
-
-         if (--num < 0)
-            num = 0;
-
-         return num;
-      }
-
-      // accept [2] for backwards compatibility
-      re = /\[(\d)+\]/;
-
-      if (anchor.match(re))
-      {
-         var num = parseInt(anchor.substring(1, anchor.length-1));
-
-         if (num > slides.length)
-            num = 1;
-
-         if (--num < 0)
-            num = 0;
-
-         return num;
-      }
-
-      // oh dear unknown anchor
-      return 0;
-   }
-
-   // search for enclosing slide
-
-   while (true)
-   {
-      // browser coerces html elements to uppercase!
-      if (target.nodeName.toLowerCase() == "div" &&
-            hasClass(target, "slide"))
-      {
-         // found the slide element
-         break;
-      }
-
-      // otherwise try parent element if any
-
-      target = target.parentNode;
-
-      if (!target)
-      {
-         return 0;   // no luck!
-      }
-   };
-
-   for (i = 0; i < slides.length; ++i)
-   {
-      if (slides[i] == target)
-         return i;  // success
-   }
-
-   // oh dear still no luck
-   return 0;
-}
-
-// find slide name from first h1 element
-// default to document title + slide number
-function slideName(index)
-{
-   var name = null;
-   var slide = slides[index];
-
-   var heading = findHeading(slide);
-
-   if (heading)
-     name = extractText(heading);
-
-   if (!name)
-     name = title + "(" + (index + 1) + ")";
-
-   name.replace(/\&/g, "&amp;");
-   name.replace(/\</g, "&lt;");
-   name.replace(/\>/g, "&gt;");
-
-   return name;
-}
-
-// find first h1 element in DOM tree
-function findHeading(node)
-{
-  if (!node || node.nodeType != 1)
-    return null;
-
-  if (node.nodeName == "H1" || node.nodeName == "h1")
-    return node;
-
-  var child = node.firstChild;
-
-  while (child)
-  {
-    node = findHeading(child);
-
-    if (node)
-      return node;
-
-    child = child.nextSibling;
-  }
-
-  return null;
-}
-
-// recursively extract text from DOM tree
-function extractText(node)
-{
-  if (!node)
-    return "";
-
-  // text nodes
-  if (node.nodeType == 3)
-    return node.nodeValue;
-
-  // elements
-  if (node.nodeType == 1)
-  {
-    node = node.firstChild;
-    var text = "";
-
-    while (node)
-    {
-      text = text + extractText(node);
-      node = node.nextSibling;
-    }
-
-    return text;
-  }
-
-  return "";
-}
-
-
-// find copyright text from meta element
-function findCopyright()
-{
-   var name, content;
-   var meta = document.getElementsByTagName("meta");
-
-   for (var i = 0; i < meta.length; ++i)
-   {
-      name = meta[i].getAttribute("name");
-      content = meta[i].getAttribute("content");
-
-      if (name == "copyright")
-         return content;
-   }
-
-   return null;
-}
-
-function findSizeAdjust()
-{
-   var name, content, offset;
-   var meta = document.getElementsByTagName("meta");
-
-   for (var i = 0; i < meta.length; ++i)
-   {
-      name = meta[i].getAttribute("name");
-      content = meta[i].getAttribute("content");
-
-      if (name == "font-size-adjustment")
-         return 1 * content;
-   }
-
-   return 0;
-}
-
-function addToolbar()
-{
-   var slideCounter, page;
-
-   var toolbar = createElement("div");
-   toolbar.setAttribute("class", "toolbar");
-
-   if (ns_pos) // a reasonably behaved browser
-   {
-      var right = document.createElement("div");
-      right.setAttribute("style", "float: right; text-align: right");
-
-      slideCounter = document.createElement("div")
-      slideCounter.innerHTML = "slide".localize() + " n/m";
-      right.appendChild(slideCounter);
-      toolbar.appendChild(right);
-
-      var left = document.createElement("div");
-      left.setAttribute("style", "text-align: left");
-
-      // global end of slide indicator
-      eos = document.createElement("span");
-      eos.innerHTML = "* ";
-      left.appendChild(eos);
-
-      var help = document.createElement("a");
-      help.setAttribute("href", helpPage);
-      help.setAttribute("title", helpText.localize());
-      help.innerHTML = "help?".localize();
-      left.appendChild(help);
-      helpAnchor = help;  // save for focus hack
-
-      var gap1 = document.createTextNode(" ");
-      left.appendChild(gap1);
-
-      var contents = document.createElement("a");
-      contents.setAttribute("href", "javascript:toggleTableOfContents()");
-      contents.setAttribute("title", "table of contents".localize());
-      contents.innerHTML = "contents?".localize();
-      left.appendChild(contents);
-
-      var gap2 = document.createTextNode(" ");
-      left.appendChild(gap2);
-
-      var i = location.href.indexOf("#");
-
-      // check if anchor is entire page
-
-      if (i > 0)
-         page = location.href.substr(0, i);
-      else
-         page = location.href;
-
-      var start = document.createElement("a");
-      start.setAttribute("href", page);
-      start.setAttribute("title", "restart presentation".localize());
-      start.innerHTML = "restart?".localize();
-//    start.setAttribute("href", "javascript:printSlides()");
-//    start.setAttribute("title", "print all slides".localize());
-//    start.innerHTML = "print!".localize();
-      left.appendChild(start);
-
-      var copyright = findCopyright();
-
-      if (copyright)
-      {
-         var span = document.createElement("span");
-         span.innerHTML = copyright;
-         span.style.color = "black";
-         span.style.marginLeft = "4em";
-         left.appendChild(span);
-      }
-
-      toolbar.appendChild(left);
-   }
-   else // IE so need to work around its poor CSS support
-   {
-      toolbar.style.position = (ie7 ? "fixed" : "absolute");
-      toolbar.style.zIndex = "200";
-      toolbar.style.width = "99.9%";
-      toolbar.style.height = "1.2em";
-      toolbar.style.top = "auto";
-      toolbar.style.bottom = "0";
-      toolbar.style.left = "0";
-      toolbar.style.right = "0";
-      toolbar.style.textAlign = "left";
-      toolbar.style.fontSize = "60%";
-      toolbar.style.color = "red";
-      toolbar.borderWidth = 0;
-      toolbar.style.background = "rgb(240,240,240)";
-
-      // would like to have help text left aligned
-      // and page counter right aligned, floating
-      // div's don't work, so instead use nested
-      // absolutely positioned div's.
-
-      var sp = document.createElement("span");
-      sp.innerHTML = "&nbsp;&nbsp;*&nbsp;";
-      toolbar.appendChild(sp);
-      eos = sp;  // end of slide indicator
-
-      var help = document.createElement("a");
-      help.setAttribute("href", helpPage);
-      help.setAttribute("title", helpText.localize());
-      help.innerHTML = "help?".localize();
-      toolbar.appendChild(help);
-      helpAnchor = help;  // save for focus hack
-
-      var gap1 = document.createTextNode(" ");
-      toolbar.appendChild(gap1);
-
-      var contents = document.createElement("a");
-      contents.setAttribute("href", "javascript:toggleTableOfContents()");
-      contents.setAttribute("title", "table of contents".localize());
-      contents.innerHTML = "contents?".localize();
-      toolbar.appendChild(contents);
-
-      var gap2 = document.createTextNode(" ");
-      toolbar.appendChild(gap2);
-
-      var i = location.href.indexOf("#");
-
-      // check if anchor is entire page
-
-      if (i > 0)
-         page = location.href.substr(0, i);
-      else
-         page = location.href;
-
-      var start = document.createElement("a");
-      start.setAttribute("href", page);
-      start.setAttribute("title", "restart presentation".localize());
-      start.innerHTML = "restart?".localize();
-//    start.setAttribute("href", "javascript:printSlides()");
-//    start.setAttribute("title", "print all slides".localize());
-//    start.innerHTML = "print!".localize();
-      toolbar.appendChild(start);
-
-      var copyright = findCopyright();
-
-      if (copyright)
-      {
-         var span = document.createElement("span");
-         span.innerHTML = copyright;
-         span.style.color = "black";
-         span.style.marginLeft = "2em";
-         toolbar.appendChild(span);
-      }
-
-      slideCounter = document.createElement("div")
-      slideCounter.style.position = "absolute";
-      slideCounter.style.width = "auto"; //"20%";
-      slideCounter.style.height = "1.2em";
-      slideCounter.style.top = "auto";
-      slideCounter.style.bottom = 0;
-      slideCounter.style.right = "0";
-      slideCounter.style.textAlign = "right";
-      slideCounter.style.color = "red";
-      slideCounter.style.background = "rgb(240,240,240)";
-
-      slideCounter.innerHTML = "slide".localize() + " n/m";
-      toolbar.appendChild(slideCounter);
-   }
-
-   // ensure that click isn't passed through to the page
-   toolbar.onclick = stopPropagation;
-   document.body.appendChild(toolbar);
-   slideNumElement = slideCounter;
-   setEosStatus(false);
-
-   return toolbar;
-}
-
-function isShownToc()
-{
-  if (toc && toc.style.visible == "visible")
-    return true;
-
-  return false;
-}
-
-function showTableOfContents()
-{
-  if (toc)
-  {
-    if (toc.style.visibility != "visible")
-    {
-      toc.style.visibility = "visible";
-      toc.style.display = "block";
-      toc.focus();
-
-      if (ie7 && slidenum == 0)
-        setTimeout("ieHack()", 100);
-    }
-    else
-      hideTableOfContents();
-  }
-}
-
-function hideTableOfContents()
-{
-  if (toc && toc.style.visibility != "hidden")
-  {
-    toc.style.visibility = "hidden";
-    toc.style.display = "none";
-
-    try
-    {
-       if (!opera)
-         helpAnchor.focus();
-    }
-    catch (e)
-    {
-    }
-  }
-}
-
-function toggleTableOfContents()
-{
-  if (toc)
-  {
-     if (toc.style.visible != "visible")
-       showTableOfContents();
-     else
-       hideTableOfContents();
-  }
-}
-
-// called on clicking toc entry
-function gotoEntry(e)
-{
-   var target;
-
-   if (!e)
-      var e = window.event;
-
-   if (e.target)
-      target = e.target;
-   else if (e.srcElement)
-      target = e.srcElement;
-
-   // work around Safari bug
-   if (target.nodeType == 3)
-      target = target.parentNode;
-
-   if (target && target.nodeType == 1)
-   {
-     var uri = target.getAttribute("href");
-
-     if (uri)
-     {
-        //alert("going to " + uri);
-        var slide = slides[slidenum];
-        hideSlide(slide);
-        slidenum = findSlideNumber(uri);
-        slide = slides[slidenum];
-        lastShown = null;
-        setLocation();
-        setVisibilityAllIncremental("hidden");
-        setEosStatus(!nextIncrementalItem(lastShown));
-        showSlide(slide);
-        //target.focus();
-
-        try
-        {
-           if (!opera)
-             helpAnchor.focus();
-        }
-        catch (e)
-        {
-        }
-     }
-   }
-
-   hideTableOfContents(e);
-   if (ie7) ieHack();
-   stopPropagation(e);
-   return cancel(e);
-}
-
-// called onkeydown for toc entry
-function gotoTocEntry(event)
-{
-  var key;
-
-  if (!event)
-    var event = window.event;
-
-  // kludge around NS/IE differences 
-  if (window.event)
-    key = window.event.keyCode;
-  else if (event.which)
-    key = event.which;
-  else
-    return true; // Yikes! unknown browser
-
-  // ignore event if key value is zero
-  // as for alt on Opera and Konqueror
-  if (!key)
-     return true;
-
-  // check for concurrent control/command/alt key
-  // but are these only present on mouse events?
-
-  if (event.ctrlKey || event.altKey)
-     return true;
-
-  if (key == 13)
-  {
-    var uri = this.getAttribute("href");
-
-    if (uri)
-    {
-      //alert("going to " + uri);
-      var slide = slides[slidenum];
-      hideSlide(slide);
-      slidenum = findSlideNumber(uri);
-      slide = slides[slidenum];
-      lastShown = null;
-      setLocation();
-      setVisibilityAllIncremental("hidden");
-      setEosStatus(!nextIncrementalItem(lastShown));
-      showSlide(slide);
-      //target.focus();
-
-      try
-      {
-         if (!opera)
-           helpAnchor.focus();
-      }
-      catch (e)
-      {
-      }
-    }
-
-    hideTableOfContents();
-    if (ie7) ieHack();
-    return cancel(event);
-  }
-
-  if (key == 40 && this.next)
-  {
-    this.next.focus();
-    return cancel(event);
-  }
-
-  if (key == 38 && this.previous)
-  {
-    this.previous.focus();
-    return cancel(event);
-  }
-
-  return true;
-}
-
-function isTitleSlide(slide)
-{
-   return hasClass(slide, "title");
-}
-
-// create div element with links to each slide
-function tableOfContents()
-{
-  var toc = document.createElement("div");
-  addClass(toc, "toc");
-  //toc.setAttribute("tabindex", "0");
-
-  var heading = document.createElement("div");
-  addClass(heading, "toc-heading");
-  heading.innerHTML = "Table of Contents".localize();
-
-  heading.style.textAlign = "center";
-  heading.style.width = "100%";
-  heading.style.margin = "0";
-  heading.style.marginBottom = "1em";
-  heading.style.borderBottomStyle = "solid";
-  heading.style.borderBottomColor = "rgb(180,180,180)";
-  heading.style.borderBottomWidth = "1px";
-
-  toc.appendChild(heading);
-  var previous = null;
-
-  for (var i = 0; i < slides.length; ++i)
-  {
-    var title = hasClass(slides[i], "title");
-    var num = document.createTextNode((i + 1) + ". ");
-
-    toc.appendChild(num);
-
-    var a = document.createElement("a");
-    a.setAttribute("href", "#(" + (i+1) + ")");
-
-    if (title)
-      addClass(a, "titleslide");
-
-    var name = document.createTextNode(slideName(i));
-    a.appendChild(name);
-    a.onclick = gotoEntry;
-    a.onkeydown = gotoTocEntry;
-    a.previous = previous;
-
-    if (previous)
-      previous.next = a;
-
-    toc.appendChild(a);
-
-    if (i == 0)
-      toc.first = a;
-
-    if (i < slides.length - 1)
-    {
-      var br = document.createElement("br");
-      toc.appendChild(br);
-    }
-
-    previous = a;
-  }
-
-  toc.focus = function () {
-    if (this.first)
-      this.first.focus();
-  }
-
-  toc.onclick = function (e) {
-    e||(e=window.event);
-    hideTableOfContents();
-    stopPropagation(e);
-    
-    if (e.cancel != undefined)
-      e.cancel = true;
-      
-    if (e.returnValue != undefined)
-      e.returnValue = false;
-      
-    return false;
-  };
-
-  toc.style.position = "absolute";
-  toc.style.zIndex = "300";
-  toc.style.width = "60%";
-  toc.style.maxWidth = "30em";
-  toc.style.height = "30em";
-  toc.style.overflow = "auto";
-  toc.style.top = "auto";
-  toc.style.right = "auto";
-  toc.style.left = "4em";
-  toc.style.bottom = "4em";
-  toc.style.padding = "1em";
-  toc.style.background = "rgb(240,240,240)";
-  toc.style.borderStyle = "solid";
-  toc.style.borderWidth = "2px";
-  toc.style.fontSize = "60%";
-
-  document.body.insertBefore(toc, document.body.firstChild);
-  return toc;
-}
-
-function replaceByNonBreakingSpace(str)
-{
-   for (var i = 0; i < str.length; ++i)
-      str[i] = 160;
-}
-
-
-function initOutliner()
-{
-  var items = document.getElementsByTagName("LI");
-
-  for (var i = 0; i < items.length; ++i)
-  {
-     var target = items[i];
-
-     if (!hasClass(target.parentNode, "outline"))
-        continue;
-
-     target.onclick = outlineClick;
-
-     if (!ns_pos)
-     {
-        target.onmouseover = hoverOutline;
-        target.onmouseout = unhoverOutline;
-     }
-
-     if (foldable(target))
-     {
-       target.foldable = true;
-       target.onfocus = function () {outline = this;};
-       target.onblur = function () {outline = null;};
-
-       if (!target.getAttribute("tabindex"))
-         target.setAttribute("tabindex", "0");
-
-       if (hasClass(target, "expand"))
-         unfold(target);
-       else
-         fold(target);
-     }
-     else
-     {
-       addClass(target, "nofold");
-       target.visible = true;
-       target.foldable = false;
-     }
-  }
-}
-
-function foldable(item)
-{
-   if (!item || item.nodeType != 1)
-      return false;
-
-   var node = item.firstChild;
-
-   while (node)
-   {
-     if (node.nodeType == 1 && isBlock(node))
-       return true;
-
-      node = node.nextSibling;
-   }
-
-   return false;
-}
-
-function fold(item)
-{
-  if (item)
-  {
-    removeClass(item, "unfolded");
-    addClass(item, "folded");
-  }
-
-  var node = item ? item.firstChild : null;
-
-  while (node)
-  {
-    if (node.nodeType == 1 && isBlock(node)) // element
-    {
-      // note that getElementStyle won't work for Safari 1.3
-      node.display = getElementStyle(node, "display", "display");
-      node.style.display = "none";
-      node.style.visibility = "hidden";
-    }
-
-    node = node.nextSibling;
-  }
-
-  item.visible = false;
-}
-
-function unfold(item)
-{
-   if (item)
-   {
-     addClass(item, "unfolded");
-     removeClass(item, "folded");
-   }
-
-  var node = item ? item.firstChild : null;
-
-  while (node)
-  {
-    if (node.nodeType == 1 && isBlock(node)) // element
-    {
-      // with fallback for Safari, see above
-      node.style.display = (node.display ? node.display : "block");
-      node.style.visibility = "visible";
-    }
-
-    node = node.nextSibling;
-  }
-
-  item.visible = true;
-}
-
-function outlineClick(e)
-{
-   var rightclick = false;
-   var target;
-
-   if (!e)
-      var e = window.event;
-
-   if (e.target)
-      target = e.target;
-   else if (e.srcElement)
-      target = e.srcElement;
-
-   // work around Safari bug
-   if (target.nodeType == 3)
-      target = target.parentNode;
-
-   while (target && target.visible == undefined)
-      target = target.parentNode;
-
-   if (!target)
-      return true;
-
-   if (e.which)
-      rightclick = (e.which == 3);
-   else if (e.button)
-      rightclick = (e.button == 2);
-
-   if (!rightclick && target.visible != undefined)
-   {
-      if (target.foldable)
-      {
-         if (target.visible)
-           fold(target);
-         else
-           unfold(target);
-      }
-
-      stopPropagation(e);
-      e.cancel = true;
-      e.returnValue = false;
-   }
-
-   return false;
-}
-
-function hoverOutline(e)
-{
-   var target;
-
-   if (!e)
-      var e = window.event;
-
-   if (e.target)
-      target = e.target;
-   else if (e.srcElement)
-      target = e.srcElement;
-
-   // work around Safari bug
-   if (target.nodeType == 3)
-      target = target.parentNode;
-
-   while (target && target.visible == undefined)
-      target = target.parentNode;
-
-   if (target && target.foldable)
-      target.style.cursor = "pointer";
-
-   return true;
-}
-
-function unhoverOutline(e)
-{
-   var target;
-
-   if (!e)
-      var e = window.event;
-
-   if (e.target)
-      target = e.target;
-   else if (e.srcElement)
-      target = e.srcElement;
-
-   // work around Safari bug
-   if (target.nodeType == 3)
-      target = target.parentNode;
-
-   while (target && target.visible == undefined)
-      target = target.parentNode;
-
-   if (target)
-     target.style.cursor = "default";
-
-   return true;
-}
-
-
-function stopPropagation(e)
-{
-   if (window.event)
-   {
-      window.event.cancelBubble = true;
-      //window.event.returnValue = false;
-   }
-   else if (e)
-   {
-      e.cancelBubble = true;
-      e.stopPropagation();
-      //e.preventDefault();
-   }
-}
-
-/* can't rely on display since we set that to none to hide things */
-function isBlock(elem)
-{
-   var tag = elem.nodeName;
-
-   return tag == "OL" || tag == "UL" || tag == "P" ||
-          tag == "LI" || tag == "TABLE" || tag == "PRE" ||
-          tag == "H1" || tag == "H2" || tag == "H3" ||
-          tag == "H4" || tag == "H5" || tag == "H6" ||
-          tag == "BLOCKQUOTE" || tag == "ADDRESS"; 
-}
-
-function getElementStyle(elem, IEStyleProp, CSSStyleProp)
-{
-   if (elem.currentStyle)
-   {
-      return elem.currentStyle[IEStyleProp];
-   }
-   else if (window.getComputedStyle)
-   {
-      var compStyle = window.getComputedStyle(elem, "");
-      return compStyle.getPropertyValue(CSSStyleProp);
-   }
-   return "";
-}
-
-// works with text/html and text/xhtml+xml with thanks to Simon Willison
-function createElement(element)
-{
-   if (typeof document.createElementNS != 'undefined')
-   {
-      return document.createElementNS('http://www.w3.org/1999/xhtml', element);
-   }
-
-   if (typeof document.createElement != 'undefined')
-   {
-      return document.createElement(element);
-   }
-
-   return false;
-}
-
-// designed to work with both text/html and text/xhtml+xml
-function getElementsByTagName(name)
-{
-   if (typeof document.getElementsByTagNameNS != 'undefined')
-   {
-      return document.getElementsByTagNameNS('http://www.w3.org/1999/xhtml', name);
-   }
-
-   if (typeof document.getElementsByTagName != 'undefined')
-   {
-      return document.getElementsByTagName(name);
-   }
-
-   return null;
-}
-
-/*
-// clean alternative to innerHTML method, but on IE6
-// it doesn't work with named entities like &nbsp;
-// which need to be replaced by numeric entities
-function insertText(element, text)
-{
-   try
-   {
-     element.textContent = text;  // DOM3 only
-   }
-   catch (e)
-   {
-      if (element.firstChild)
-      {
-         // remove current children
-         while (element.firstChild)
-            element.removeChild(element.firstChild);
-      }
-
-      element.appendChild(document.createTextNode(text));
-   }
-}
-
-// as above, but as method of all element nodes
-// doesn't work in IE6 which doesn't allow you to
-// add methods to the HTMLElement prototype
-if (HTMLElement != undefined)
-{
-  HTMLElement.prototype.insertText = function(text) {
-    var element = this;
-
-    try
-    {
-      element.textContent = text;  // DOM3 only
-    }
-    catch (e)
-    {
-      if (element.firstChild)
-      {
-         // remove current children
-         while (element.firstChild)
-           element.removeChild(element.firstChild);
-      }
-
-      element.appendChild(document.createTextNode(text));
-    }
-  };
-}
-*/
-
-function getSelectedText()
-{
-  try
-  {
-    if (window.getSelection)
-      return window.getSelection().toString();
-
-    if (document.getSelection)
-      return document.getSelection().toString();
-
-    if (document.selection)
-      return document.selection.createRange().text;
-  }
-  catch (e)
-  {
-    return "";
-  }
-  return "";
-}