var cssdropdown=
{
disappeardelay: 250, //set delay in miliseconds before menu disappears onmouseout
disablemenuclick: true, //when user clicks on a menu item with a drop down menu, disable menu item's link?
enableswipe: 1, //enable swipe effect? 1 for yes, 0 for no
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


dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all, swipetimer: undefined, bottomclip:0,

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;
},

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("cssdropdown.swipeeffect()", 10)
},

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"
},

iecompattest:function()
{
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
},

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
},

dropit:function(obj, e, dropmenuID)
{
	if (this.dropmenuobj!=null) //hide previous menu
	this.dropmenuobj.style.visibility="hidden" //hide menu
	this.clearhidemenu()
	if (this.ie||this.firefox)
	{
	obj.onmouseout=function(){cssdropdown.delayhidemenu()
	}
	obj.onclick=function(){return !cssdropdown.disablemenuclick} //disable main menu item link onclick?
	this.dropmenuobj=document.getElementById(dropmenuID)
	this.dropmenuobj.onmouseover=function(){cssdropdown.clearhidemenu()}
	this.dropmenuobj.onmouseout=function(e){cssdropdown.dynamichide(e)}
	this.dropmenuobj.onclick=function(){cssdropdown.delayhidemenu()}
	this.showhide(this.dropmenuobj.style, e)
	this.dropmenuobj.x=this.getposOffset(obj, "left")
	this.dropmenuobj.y=this.getposOffset(obj, "top")
	this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")+"px"
	this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1+"px"
	this.positionshim() //call iframe shim function
	}
},

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"
	}
},

hideshim:function()
{
	if (this.enableiframeshim && typeof this.shimobject!="undefined")
	this.shimobject.style.display='none'
},

contains_firefox:function(a, b) 
{
while (b.parentNode)
	if ((b = b.parentNode) == a)
	return true;
	return false;
},

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()
},

delayhidemenu:function()
{
	this.delayhide=setTimeout("cssdropdown.dropmenuobj.style.visibility='hidden'; cssdropdown.hideshim()",this.disappeardelay) //hide menu
},

clearhidemenu:function()
{
	if (this.delayhide!="undefined")
	clearTimeout(this.delayhide)
},

initial:function()
{
	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){
			var event=typeof e!="undefined"? e : window.event
			cssdropdown.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="" 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
}

}

}