var ie5 = document.all
var ns6 = document.getElementById&&!document.all

function get_offsetPosition(linkMenu, leftTop){
	var theOffset = (leftTop=="left")? linkMenu.offsetLeft : linkMenu.offsetTop;
	var parentEl = linkMenu.offsetParent;
	while (parentEl != null){
		theOffset = (leftTop == "left")? theOffset+parentEl.offsetLeft : theOffset+parentEl.offsetTop;
		parentEl = parentEl.offsetParent;
	}
	return theOffset;
}

function showhide(obj, e, visible, hidden){
	if (ie5||ns6)
		dropmenuobj.style.left=dropmenuobj.style.top = -500
	if (e.type == "click" && obj.visibility==hidden || e.type=="mouseover")
		obj.visibility=visible
	else if (e.type == "click")
		obj.visibility=hidden
}

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

function clearbrowseredge(obj, whichEdge){
	var offsetEdge = 0
	if (whichEdge == "rightedge"){
		var windowEdge = ie5 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
		dropmenuobj.contentmeasure = dropmenuobj.offsetWidth
		if (windowEdge-dropmenuobj.x < dropmenuobj.contentmeasure)
		offsetEdge = dropmenuobj.contentmeasure-obj.offsetWidth
	}
	else{
		var topEdge = ie5 && !window.opera? iecompattest().scrollTop : window.pageYOffset
		var windowEdge = ie5 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
		dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
		if (windowEdge-dropmenuobj.y < dropmenuobj.contentmeasure){ 
			offsetEdge=dropmenuobj.contentmeasure+obj.offsetHeight
			if ((dropmenuobj.y-topEdge) < dropmenuobj.contentmeasure) 
			offsetEdge = dropmenuobj.y+obj.offsetHeight-topEdge
		}
	}
	return offsetEdge
}

function dropdownmenu(obj, e, dropmenuID){
	if (window.event) event.cancelBubble = true
	else if (e.stopPropagation) e.stopPropagation()
	if (typeof dropmenuobj!="undefined")
		dropmenuobj.style.visibility="hidden"
	clearhidemenu()
	if (ie5||ns6){
		obj.onmouseout = delayhidemenu
		dropmenuobj = document.getElementById(dropmenuID)
		dropmenuobj.onclick=function(){dropmenuobj.style.visibility='hidden'}
		dropmenuobj.onmouseover=clearhidemenu
		dropmenuobj.onmouseout=ie5? function(){ dynamichide(event)} : function(event){ dynamichide(event)}
		showhide(dropmenuobj.style, e, "visible", "hidden")
		dropmenuobj.x=get_offsetPosition(obj, "left")
		dropmenuobj.y=get_offsetPosition(obj, "top")
		dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
		dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
	}
	return false
}
	
function contains_ns6(a, b) {
	while (b.parentNode)
	if ((b = b.parentNode) == a)
	return true;
	return false;
}

function dynamichide(e){
	if (ie5&&!dropmenuobj.contains(e.toElement))
	delayhidemenu()
	else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
	delayhidemenu()
}

function delayhidemenu(){
	delayhide=setTimeout("dropmenuobj.style.visibility='hidden'",200)
}

function clearhidemenu(){
	if (typeof delayhide!="undefined")
	clearTimeout(delayhide)
}