function init()
{
	// We'll use this "pointer" to traverse the document object tree
	var ptr;
	
	// Implement user-preferred font size
	if (readCookie("styleside") != null)
	{
		if(readCookie("styleside") == "small"){
			var fontSelectors = getSpecificElementsByClass("a", "textSizeSmLink");
			
			//for (var i in elems)
			for (var i=0; i < fontSelectors.length; i++)
			{
				addClass(fontSelectors[i], "textSizeSmLinkOv");
			}
		} else if(readCookie("styleside") == "medium"){
			var fontSelectors = getSpecificElementsByClass("a", "textSizeMedLink");
			
			//for (var i in elems)
			for (var i=0; i < fontSelectors.length; i++)
			{
				addClass(fontSelectors[i], "textSizeMedLinkOv");
			}
		} else if(readCookie("styleside") == "large") {
			var fontSelectors = getSpecificElementsByClass("a", "textSizeLgLink");
			
			//for (var i in elems)
			for (var i=0; i < fontSelectors.length; i++)
			{
				addClass(fontSelectors[i], "textSizeLgLinkOv");
			}
		}
	}
	else
	{
		var fontSelectors = getSpecificElementsByClass("a", "textSizeMedLink");
		
		//for (var i in elems)
		for (var i=0; i < fontSelectors.length; i++)
		{
			addClass(fontSelectors[i], "textSizeMedLinkOv");
		}
	}
}

function resetFontSelector()
{
	var fontSelectors = getSpecificElementsByClass("a", "textSizeSmLink");
	
	//for (var i in elems)
	for (var i=0; i < fontSelectors.length; i++)
	{
		removeClass(fontSelectors[i], "textSizeSmLinkOv");
	}
	
	fontSelectors = getSpecificElementsByClass("a", "textSizeMedLink");
	
	//for (var i in elems)
	for (var i=0; i < fontSelectors.length; i++)
	{
		removeClass(fontSelectors[i], "textSizeMedLinkOv");
	}
	
	fontSelectors = getSpecificElementsByClass("a", "textSizeLgLink");
	
	//for (var i in elems)
	for (var i=0; i < fontSelectors.length; i++)
	{
		removeClass(fontSelectors[i], "textSizeLgLinkOv");
	}
}

function addClass(element, className) {
    if (!hasClass(element, className)) {
        if (element.className) element.className += " " + className;
        else element.className = className;
    }
};

function removeClass(element, className) {
    var regexp = new RegExp("(^|\\s)" + className + "(\\s|$)");
    element.className = element.className.replace(regexp, "$2");
};

function hasClass(element, className) {
    var regexp = new RegExp("(^|\\s)" + className + "(\\s|$)");
    return regexp.test(element.className);
};

getSpecificElementsByClass = function (tagName, className)
{
	var elems = document.getElementsByTagName(tagName);
	var classElems = new Array();
	
	//for (var i in elems)
	for (var i=0; i < elems.length; i++)
	{
		if (hasClass(elems[i], className))
		{
			classElems.push(elems[i]);
		}
	}
	return classElems;
}

function setActiveStyleSheet(title, objSelector) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
  
	if (objSelector) {
		resetFontSelector();
		
		if(title == "small"){
			addClass(objSelector, "textSizeSmLinkOv");
		} else if(title == "large"){
			addClass(objSelector, "textSizeLgLinkOv");
		} else {
			addClass(objSelector, "textSizeMedLinkOv");
		}
	}
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

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 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;
}

window.onload = function(e) {
  var cookie = readCookie("styleside");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("styleside", title, 365);
}

var cookie = readCookie("styleside");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);