function getParamValue(name) {
  var re = new RegExp('&'+name+'=([^&]*)','i');
  var c = document.location.search;
  return (c=c.replace(/^\?/,'&').match(re)) ?c=c[1] :c='';
};

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
	  var c = ca[i];
	  while (c.charAt(0)==' ')
            c = c.substring(1,c.length);
	  if (c.indexOf(nameEQ) == 0)
            return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function shuffleChildNodes(aNode) {
  rowList = aNode.childNodes;
  if (rowList.length > 0) {
  rowParent = rowList[0].parentNode;

    firstTabIndex = rowList[0].tabIndex;
    for (var i=0; i < rowList.length; i++) {
      // select two random nodes and move them last. (Change to swapNodes?)
    NewIndex = Math.floor(Math.random()*rowList.length);
    obj2MoveLast = rowList[NewIndex];
    rowParent.insertBefore(obj2MoveLast,null);
    }
    // reorder the tabIndex
    for (var i=0; i < aNode.childNodes.length; i++) {
      if (aNode.childNodes[i].tabIndex > 0)
        aNode.childNodes[i].tabIndex = firstTabIndex + i;
    }
  }
}

function addUnLoadListener(fn)
{
  if (typeof window.addEventListener != 'undefined')
  {
    window.addEventListener('unload', fn, false);
  }
  else if (typeof document.addEventListener != 'undefined')
  {
    document.addEventListener('unload', fn, false);
  }
  else if (typeof window.attachEvent != 'undefined')
  {
    window.attachEvent('onunload', fn);
  }
  else
  {
    var oldfn = window.onunload;
    if (typeof window.onunload != 'function')
    {
      window.onunload = fn;
    }
    else
    {
      window.onunload = function()
      {
        oldfn();
        fn();
      };
    }
  }
}


function addLoadListener(fn)
{
  if (typeof window.addEventListener != 'undefined')
  {
    window.addEventListener('load', fn, false);
  }
  else if (typeof document.addEventListener != 'undefined')
  {
    document.addEventListener('load', fn, false);
  }
  else if (typeof window.attachEvent != 'undefined')
  {
    window.attachEvent('onload', fn);
  }
  else
  {
    var oldfn = window.onload;
    if (typeof window.onload != 'function')
    {
      window.onload = fn;
    }
    else
    {
      window.onload = function()
      {
        oldfn();
        fn();
      };
    }
  }
}

/*PlayEmbbededSound is used in a temporary solution for cross browser sound for
  TTS converted to wav. It will be removed later.
*/
function PlayEmbeddedSound(soundobj) {
  var thissound=document.getElementById(soundobj);
  if (thissound)
    thissound.Play();
}

/*stopBGSound and playBGSound stops (or restarts) a BackgroundSound added thru
  the BackgroundSound property. Note that a sound cannot be stopped in Opera and
  that it did not work to perform method checks in IE: if (obj.Play) obj.Play()
*/
function stopBGSound() {
  try {
    if (window.parent.document) {
      obj = window.parent.document.getElementById('LABBGSoundPlayer');
      if (obj)
         obj.Stop(); // does not work in Opera
    }
  }
  finally {
    // silent exception
  }
}

function playBGSound() {
  try {
    if (window.parent.document) {
      obj = window.parent.document.getElementById('LABBGSoundPlayer');
      if (obj)
        if (obj)
          obj.Play();
    }
  }
  finally {
    // silent exception
  }
}


function setObjectMethods(obj) {
  if (obj.id) {
    obj.incWidth = methodIncWidth;
    obj.incHeight = methodIncHeight;
    obj.incLeft = methodIncLeft;
    obj.incTop = methodIncTop;
    obj.rescale = methodRescale;
    obj.getAttr = methodGetAttr;
    obj.setAttr = methodSetAttr;
    obj.oldStyle = new oldStyle(obj);
    obj.resetStyle = getOldStyle;
  }
}

function methodIncWidth(w) {
  var width = ie ? this.currentStyle.width : document.defaultView.getComputedStyle(this, null).width;
  var w2 = parseInt(width) + w;
  if (w2 >= 0)
    this.style.width =  w2 + "px";
}

function methodIncHeight(h) {
  var height = ie ? this.currentStyle.height : document.defaultView.getComputedStyle(this, null).height;
  var h2 = parseInt(height) + h;
  if (h2 >= 0)
    this.style.height = h2 + "px";
}

function methodIncLeft(l) {
  var left = ie ? this.currentStyle.left : document.defaultView.getComputedStyle(this, null).left;
  var l2 = parseInt(left) + l;
  if (l2 >= -32768)
    this.style.left = l2 + "px";
}

function methodIncTop(t) {
  var top = ie ? this.currentStyle.top : document.defaultView.getComputedStyle(this, null).top;
  var t2 = parseInt(top) + t;
  if (t2 >= -32768)
    this.style.top = t2 + "px";
}

function methodRescale(wh) {
  this.incWidth(wh*2);
  this.incHeight(wh*2);
  this.incLeft(-wh);
  this.incTop(-wh);
}

function methodGetAttr(attrName) {
  var attrVal;
  if (visObj(this.id)) {
    try {
      attrVal = eval("this.style." + attrName);
    } catch (e) {}
  }
  return attrVal;
}

function methodSetAttr(attrName, attrVal) {
  if (visObj(this.id)) {
    try {
      eval("this.style."+attrName+" = '"+attrVal+"';");
    } catch (e) {}
  }
}

function getSender() {
  try {
    return (ie ? window.event.srcElement : getObject(event.target));
  } catch (e) {  return null; }
}

function propagateVisibility(parent) {
  // fix for inheritance inconsistense
  for (var i = 0; i<parent.childNodes.length; i++)
    if (typeof(parent.childNodes[i].id) == 'string')
      parent.childNodes[i].style.visibility = parent.style.visibility;
}

function hideObject(object) {
  if ((visObj(object.id)) && (object.style.visibility != "hidden")) {
    if (isMediaObject(object))
      object.stop();
    if (ie) {
      if ((object.filters.length > 0)) {
        object.style.visibility="visible";
        playTransition(object);
      }
      else
        object.style.visibility="hidden";
    }
    else
      object.style.visibility="hidden";
    // Propagate visibility to child nodes.
    for (var i = 0; i < object.childNodes.length; i++)
      if (typeof(object.childNodes[i].id) == 'string')
        hideObject(object.childNodes[i]);
  }
}

function showObject(object) {
  if (visObj(object.id)) {
    if (ie) {
      if ((object.filters.length > 0)) {
        object.style.visibility="hidden";
        object.style.display="block";
        playTransition(object);
      }
      object.style.visibility="visible";
    }
    else {
      object.style.visibility="visible";
      object.style.display="block";
    }
    // Propagate visibility to child nodes.
    for (var i = 0; i < object.childNodes.length; i++)
      if (typeof(object.childNodes[i].id) == 'string')
        showObject(object.childNodes[i]);
  }
}

function moveToTop(object) {
  if (visObj(object.id)) {
    var z = 0;
    for (var i=0; i < vispage.childNodes.length; i++) {
      try {
        var cZ = vispage.childNodes[i].getAttr("zIndex");
        if (cZ > z)
          z = cZ;
      }
      catch(e) {}
    }
    var zIndex = object.getAttr("zIndex");
    if (zIndex <= z) {
      object.setAttr("oldzIndex", zIndex);
      object.setAttr("zIndex", z + 1);
    }
  }
}

function removeObject(object) {
  try {
    if (visObj(object.id))
      deleteObject(object.id);
  } catch (e) {}
}

function newSize(object, width, height) {
  if (visObj(object.id)) {
    object.style.width = width + "px";
    object.style.height = height + "px";
  }
}

function newPos(object, left, top) {
  if (visObj(object.id)) {
    object.style.left = left + "px";
    object.style.top = top + "px";
  }
}

function redrawPage() {
  if (currPage.id != "page")
    jumpToPage(currPage.id);
  else
    document.location.href = document.location.href;
}

function resetObject(object) {
  if (visObj(object.id))
    object.resetStyle();
}

function changeTextColor(object, color) {
  if (visObj(object.id))
    object.style.color = color;
}

function changeBorderColor(object, color) {
  if (visObj(object.id))
    object.style.borderColor = color;
}

function changeBackgroundColor(object, color) {
  if (visObj(object.id))
    object.style.backgroundColor = color;
}

function changeOpacity(object, msopac, nsopac) {
  if (visObj(object.id)) {
    if (ie)
      object.style.filter += "alpha(opacity=" + msopac + ")";
    else
      object.style.opacity = nsopac / 100;
  }
}

function changeVolume(object, volume) {
  if (isMediaObject(object)) {
    var vol = object.player.settings.volume;
    vol += volume;
    if ((vol >= 0) && (vol <= 100))
      object.player.settings.volume = vol;
  }
}

function changeBalance(object, balance) {
  if (isMediaObject(object)) {
    var bal = object.player.settings.balance;
    bal += balance;
    if ((bal >= -100) && (bal <= 100))
      object.player.settings.balance = bal;
  }
}

function setVolume(object, volume) {
  if (isMediaObject(object))
    object.player.settings.volume = volume;
}

function setBalance(object) {
  if (isMediaObject(object))
    object.player.settings.balance = balance;
}

var pImageList = new Array();
function preloadImage(file) {
  var cnt = pImageList.length;
  pImageList[cnt] = new Image();
  pImageList[cnt].src = file;
}

function collectAllNodes(node) {
  var all = new Array();
  var nodes = node.childNodes;
  for (var i=0; i < nodes.length; i++) {
    if (nodes[i].hasChildNodes())
      collectAllNodes(nodes[i]);
      document.all[document.all.length] = nodes[i];
  }
}

function geckoInsertHTML(node, src) {
  var range = document.createRange();
  range.setStartAfter(node.lastChild);
  var docFrag = range.createContextualFragment(src);
  node.appendChild(docFrag);
}

function objClassMember(obj, cName) {
  return (obj.className ? (obj.className.match(cName) != null) : false);
}

function createMedia(isSound) {
  var str = new String();
  if (ie)
    str = "<object id='" + this.id + "Object' classid='" + this.clsid +
          "' width='" + this.width + "' height='" + this.height + "' class='mtype'>"
  else
    str = "<object id='" + this.id + "Object' type='" + this.type +
          "' data='" + fixURL(this.url) +
          "' width='" + this.width + "' height='" + this.height + "' class='mtype'>";
  for (var i=0; i < this.params.length; i++)
    str += this.params[i];
  str += "</object>";

  if (isSound)
    str = str.replace(/mtype/,"soundObject")
  else
    str = str.replace(/mtype/,"mediaobject");

  if (ie)
    this.insertAdjacentHTML("beforeEnd",str)
  else
    geckoInsertHTML(this,str);

  this.player = document.getElementById(this.id + "Object");
  this.copyTo = moveMedia;
  if (isSound)
    this.player.style.visibility = "hidden";
}

function mediaAddParam(name, value) {
  this.params[this.params.length] =
    "<param name='" + name + "' value='" + value + "'/>";
}

function stopAudioVideo() {
  var pChildren = vispage.childNodes;
  for (var i = (pChildren.length - 1); i >= 0; i--) {
    var child = pChildren[i];
    if (objClassMember(child,"media"))
      child.stop();
  }
}

function fixURL(url) {
  var bref = document.location.href;
  if (bref.match(/^file\:\/\//)) {
    var re = /(\.\.)/g;
    var str = url.match(re);
    if (str) {
      url = url.replace(/\.\.\//g,"");
      var cnt = str.length;
      if (cnt != null) {
        var re = new RegExp("(.*\/)(.*?\/){"+cnt+"}(.*?$)");
        str = re.exec(bref);
        return unescape(str[1] + url);
      }
    }
  }
  return url;
}

function addEvent(elm, evType, fn, useCapture) {
  if (elm.addEventListener) {
    elm.addEventListener(evType, fn, useCapture);
    return true;
  } else if (elm.attachEvent) {
     var r = elm.attachEvent('on' + evType, fn);
     return r;
  }  else {
     elm['on' + evType] = fn;
  }
}

/*
var finder;
function NodeListItems(aNode,aStyle) {
  this.node = aNode;
  this.borderWidth = aNode.style.borderWidth;
  this.borderStyle = aNode.style.borderStyle;
  this.borderColor = aNode.style.borderColor;
  this.padding = aNode.style.padding;
  this.HotBorderColor = '#FF0000';
  this.HotBorderWidth = 1;
  this.HotBorderStyle = 'solid';
  this.backgroundColor = aNode.style.backgroundColor;
  this.useBackground = (aNode.nodeName == 'OPTION') || (aNode.nodeName == 'INPUT');
  this.execute = function () {
    if (this.node.nodeName == 'A')
      this.node.click()
    else if (this.node.onclick)
      this.node.onclick()
    else if (this.node.type=='checkbox')
      this.node.checked = (!this.node.checked)
    else if (this.node.nodeName=='OPTION')
      this.node.selected = (!this.node.selected)
    else if (this.node.type=='radio')
      if (!this.node.selected) this.node.click();
  }
  // public methods
  this.HighLights = function() {
    this.node.style.borderWidth = '1px'; //this.HotBorderWidth + 'px';
    this.node.style.borderStyle = 'solid'; //this.HotBorderStyle;
    this.node.style.borderColor = '#FF0000'; //this.HotBorderColor;
    this.node.style.padding = this.node.style.borderWidth;
    this.node.focus();
     if (this.useBackground) {
      this.node.style.backgroundColor = this.HotBorderColor;
      this.node.style.outlineStyle = 'solid';
      this.node.style.outlineWidth = '1px';
      this.node.style.outlineColor = '#FF0000';
    }
  }
  this.resetStyles = function () {
    this.node.style.borderStyle = this.borderStyle;
    this.node.style.borderWidth = this.borderWidth;
    this.node.style.borderColor = this.borderColor;
    this.node.style.padding = this.padding;
    if (this.useBackground) {
      this.node.style.backgroundColor = this.backgroundColor;
      this.node.style.outlineStyle = this.borderStyle;
      this.node.style.outlineWidth = this.borderWidth;
      this.node.style.outlineColor = this.borderColor;
    }
  } // end resetStyles
}

function findNode(node, direction) {
  var ObjectList = new Array();
  var ItemIndex = -1;
  var FHotBorderColor;
  var FHotBorderWidth;
  var FHotBorderStyle;
  // public
  this.CurrentNode = null;

  this.Init = function() {
      // this is needed to access the properties from local function FindSelectableNodes:
      FHotBorderColor = this.HotBorderColor;
      FHotBorderWidth = this.HotBorderWidth;
      FHotBorderStyle = this.HotBorderStyle;
    FindSelectables(node);
    }

  this.next = function next(direction) {
      var l = ObjectList.length;
      if (l > 0) {
      if (direction =='next') {
        if (ItemIndex < l - 1){
          ItemIndex++
        }else{
          ItemIndex = 0;}
          } else if (direction =='execute') {
          ObjectList[ItemIndex].execute();
         } else {
          if (ItemIndex > 0){
          ItemIndex--
          }else{
          ItemIndex = l-1;}
          }
        if (this.CurrentNode)
          this.CurrentNode.resetStyles();
        //alert(ObjectList[ItemIndex].node.id);
        this.CurrentNode = ObjectList[ItemIndex];
        this.CurrentNode.HighLights();
      }
  } // end next

 function FindSelectables(node) {
    var children = node.childNodes;
    for (var i=0; i < children.length; i++)
    {
      var CanSelect = (children[i].onclick) || (children[i].nodeName == 'INPUT') || (children[i].nodeName == 'OPTION') || (children[i].nodeName == 'A');
      if (CanSelect) {
        // add a new item node
        var NewNode = new NodeListItems(children[i], children[i].style);
        NewNode.HotBorderColor = FHotBorderColor;
        NewNode.HotBorderWidth = FHotBorderWidth;
        NewNode.HotBorderStyle  = FHotBorderStyle;
        ObjectList.push(NewNode);
      }
      if ((children[i].className != 'hidden') && (children[i].childNodes.length > 0))
        FindSelectables(children[i]);
    }
  return this;
  }
if (finder == null) {
this.next(direction);
} else {
 finder.next(direction);
 }
}; // end findNode
function findAllNodes(Node,direction) {
  if (finder == null) {
    finder = new findNode(Node,direction);
    if (finder) {
      finder.HotBorderColor = 'red';
      finder.HotBorderWidth = '1px';
      finder.HotBorderStyle = 'solid';
      finder.Init();
    }
  }
};
*/