function CSSDropDown(referenceName, hideDelay, disableMenu, adjustVertical, adjustHorizontal)
{
	this.selfname = referenceName; // this is the name of the variable being used to hold the reference to this object
	this.disappeardelay = hideDelay; //set delay in miliseconds before menu disappears onmouseout
	this.disablemenuclick = disableMenu; //when user clicks on a menu item with a drop down menu; disable menu item's link?
	// new settings to control relocation of menus
	this.adjustvertical = adjustVertical;
	this.adjusthorizontal = adjustHorizontal;
	
	this.enableswipe = 1; //enable swipe effect? 1 for yes; 0 for no
	this.enableiframeshim = 1; //enable "iframe shim" technique to get drop down menus to correctly appear on top of controls such as form objects in IE5.5/IE6? 1 for yes; 0 for no
	
	//No need to edit beyond here////////////////////////
	this.dropmenuobj = null; 
	this.ie = document.all; 
	this.firefox = document.getElementById&&!document.all; 
	this.swipetimer = undefined; 
	this.bottomclip = 0;
	
	this.getposOffset = function(what, offsettype)
	{
		var totaloffset = (offsettype == "left")? what.offsetLeft : what.offsetTop;
		var parentEl = what.offsetParent;
		while (parentEl!= null)
		{
			totaloffset = (offsettype == "left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
			parentEl = parentEl.offsetParent;
		}
		return totaloffset;
	}
	
	this.swipeeffect = function()
	{
		if (this.bottomclip<parseInt(this.dropmenuobj.offsetHeight))
		{
			this.bottomclip+= 10+(this.bottomclip/10) //unclip drop down menu visibility gradually
			this.dropmenuobj.style.clip = "rect(0 auto "+this.bottomclip+"px 0)";
		}
		else
			return;
		this.swipetimer = setTimeout(this.selfname+".swipeeffect()", 10);
	}
	
	this.showhide = function(obj, e)
	{
		if (this.ie || this.firefox)
			this.dropmenuobj.style.left = this.dropmenuobj.style.top = "-500px";
		if (e.type == "click" && obj.visibility == hidden || e.type == "mouseover")
		{
			if (this.enableswipe == 1)
			{
				if (typeof this.swipetimer!= "undefined")
					clearTimeout(this.swipetimer);
				obj.clip = "rect(0 auto 0 0)"; //hide menu via clipping
				this.bottomclip = 0;
				this.swipeeffect();
			}
			obj.visibility = "visible";
		}
		else if (e.type == "click")
			obj.visibility = "hidden";
	}
	
	this.iecompattest = function()
	{
		return (document.compatMode && document.compatMode!= "BackCompat")? document.documentElement : document.body
	}
	
	this.clearbrowseredge = function(obj, whichedge)
	{
		var edgeoffset = 0;
		if (whichedge == "rightedge")
		{
			var windowedge = this.ie && !window.opera? this.iecompattest().scrollLeft+this.iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15;
			this.dropmenuobj.contentmeasure = this.dropmenuobj.offsetWidth;
			if (windowedge-this.dropmenuobj.x < this.dropmenuobj.contentmeasure) //move menu to the left?
				edgeoffset = this.dropmenuobj.contentmeasure-obj.offsetWidth;
		}
		else
		{
			var topedge = this.ie && !window.opera? this.iecompattest().scrollTop : window.pageYOffset;
			var windowedge = this.ie && !window.opera? this.iecompattest().scrollTop+this.iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18;
			this.dropmenuobj.contentmeasure = this.dropmenuobj.offsetHeight;
			if (windowedge-this.dropmenuobj.y < this.dropmenuobj.contentmeasure)
			{ //move up?
			edgeoffset = this.dropmenuobj.contentmeasure+obj.offsetHeight;
			if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) //up no good either?
				edgeoffset = this.dropmenuobj.y+obj.offsetHeight-topedge;
			}
		}
		return edgeoffset;
	}
	
	this.dropit = function(obj, e, dropmenuID)
	{
		var self = eval(this.selfname);
		if (this.dropmenuobj!= null) //hide previous menu
			this.dropmenuobj.style.visibility = "hidden"; //hide menu
		this.clearhidemenu();
		if (this.ie||this.firefox)
		{
			obj.onmouseout = function()
			{
				self.delayhidemenu();
			}
			obj.onclick = function()
			{
				return !this.disablemenuclick; //disable main menu item link onclick?
			}
			this.dropmenuobj = document.getElementById(dropmenuID);
			this.dropmenuobj.onmouseover = function()
			{
				self.clearhidemenu();
			}
			this.dropmenuobj.onmouseout = function(e)
			{
				self.dynamichide(e);
			}
			this.dropmenuobj.onclick = function()
			{
				self.delayhidemenu();
			}
			this.showhide(this.dropmenuobj.style, e);
			this.dropmenuobj.x = this.getposOffset(obj, "left");
			this.dropmenuobj.y = this.getposOffset(obj, "top");
			var horizoffset = this.adjusthorizontal ? this.clearbrowseredge(obj, "rightedge") : 0;
			var vertoffset = this.adjustvertical ? this.clearbrowseredge(obj, "bottomedge") : 0;
			this.dropmenuobj.style.left = this.dropmenuobj.x-horizoffset+"px";
			this.dropmenuobj.style.top = this.dropmenuobj.y+obj.offsetHeight+1-vertoffset+"px";
			this.positionshim(); //call iframe shim function
		}
	}
	
	this.positionshim = function()
	{ //display iframe shim function
		if (this.enableiframeshim && typeof this.shimobject!= "undefined")
		{
			if (this.dropmenuobj.style.visibility == "visible")
			{
				this.shimobject.style.width = this.dropmenuobj.offsetWidth+"px";
				this.shimobject.style.height = this.dropmenuobj.offsetHeight+"px";
				this.shimobject.style.left = this.dropmenuobj.style.left;
				this.shimobject.style.top = this.dropmenuobj.style.top;
			}
			this.shimobject.style.display = (this.dropmenuobj.style.visibility == "visible")? "block" : "none";
		}
	}
	
	this.hideshim = function()
	{
		if (this.enableiframeshim && typeof this.shimobject!= "undefined")
			this.shimobject.style.display = 'none';
	}
	
	this.contains_firefox = function(a, b) 
	{
		while (b.parentNode)
			if ((b = b.parentNode) == a)
				return true;
		return false;
	}
	
	this.dynamichide = function(e)
	{
		var evtobj = window.event? window.event : e;
		if (this.ie&&!this.dropmenuobj.contains(evtobj.toElement))
			this.delayhidemenu();
		else if (this.firefox&&e.currentTarget!= evtobj.relatedTarget&& !this.contains_firefox(evtobj.currentTarget, evtobj.relatedTarget))
			this.delayhidemenu();
	}
	
	this.delayhidemenu = function()
	{
		this.delayhide = setTimeout(this.selfname+".dropmenuobj.style.visibility = 'hidden'; "+this.selfname+".hideshim()",this.disappeardelay); //hide menu
	}
	
	this.clearhidemenu = function()
	{
		if (this.delayhide!= "undefined")
			clearTimeout(this.delayhide);
	}
	
	this.startchrome = function()
	{
		var self = eval(this.selfname);
		for (var ids = 0; ids<arguments.length; ids++)
		{
			var menuitems = document.getElementById(arguments[ids]).getElementsByTagName("a")
			for (var i = 0; i<menuitems.length; i++)
			{
				if (menuitems[i].getAttribute("rel"))
				{
					var relvalue = menuitems[i].getAttribute("rel");
					menuitems[i].onmouseover = function(e)
					{
						//debugger;
						var event = typeof e!= "undefined"? e : window.event;
						self.dropit(this,event,this.getAttribute("rel"));
					}
				}
			}
		}
		if (window.createPopup && !window.XmlHttpRequest)
		{ //if IE5.5 to IE6, create iframe for iframe shim technique
			document.write('<IFRAME id = "iframeshim" src = "/blank.htm" style = "display: none; left: 0; top: 0; z-index: 90; position: absolute; filter: progid:DXImageTransform.Microsoft.Alpha(style = 0,opacity = 0)" frameBorder = "0" scrolling = "no"></IFRAME>');
			this.shimobject = document.getElementById("iframeshim"); //reference iframe object
		}
	}
	return this;
}