var agt=navigator.userAgent.toLowerCase();

var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
             && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
             && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));

var disappeardelay=250  //menu disappear speed onMouseout (in miliseconds)
var horizontaloffset=2 //horizontal offset of menu from default location. (0-5 is a good value)

var ie4=document.all
var ns6=document.getElementById&&!document.all
var tmpobj=new Object()

if (ie4||ns6)
	document.write('<div id="dropmenudiv" style="visibility:hidden" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')

function getposOffset(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;
}


function showhide(obj, e, visible, hidden, menuwidth){

	if (ie4||ns6)
		dropmenuobj.style.left=dropmenuobj.style.top=-500
		dropmenuobj.widthobj=dropmenuobj.style
		dropmenuobj.widthobj.width=menuwidth
	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 edgeoffset=0
	if (whichedge=="leftedge"){
		var windowedge=ie4 && !window.opera? iecompattest().scrollLeft-iecompattest().clientWidth-15 : window.pageXOffset-window.innerWidth-15
		dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
		if (windowedge-dropmenuobj.x-obj.offsetWidth < dropmenuobj.contentmeasure)
			edgeoffset=dropmenuobj.contentmeasure+1
	}
	else{
		var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
		var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight+15 : window.pageYOffset+window.innerHeight-18
		dropmenuobj.contentmeasure=dropmenuobj.offsetHeigh
		if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){
			edgeoffset=dropmenuobj.contentmeasure-obj.offsetHeight
			if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure)
				edgeoffset=dropmenuobj.y
		}
	}
	return edgeoffset
}

function populatemenu(what){
	if (ie4||ns6)
		dropmenuobj.innerHTML=what.join("")
}
function dropdownmenuv(obj, e, menucontents, menuwidth){
	tmpobj.className=""
	tmpobj=obj
	obj.className="current"
	
	if (window.event) event.cancelBubble=true
	else if (e.stopPropagation) e.stopPropagation()
		clearhidemenu()
		dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
		dropmenuobj.className="archive"
		populatemenu(menucontents)

	if (ie4||ns6){
		showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
		dropmenuobj.x=getposOffset(obj, "left")
		if (is_nav){
			dropmenuobj.y=getposOffset(obj, "top")+20
		}else {
			dropmenuobj.y=getposOffset(obj, "top")+20
		}
		dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "leftedge")+obj.offsetWidth+horizontaloffset+"px"
		dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+"px"
	}

	return clickreturnvalue()
}

function dropdownmenu(obj, e, menucontents, menuwidth){
	tmpobj.className=""
	tmpobj=obj
	obj.className="current"
	
	if (window.event) event.cancelBubble=true
	else if (e.stopPropagation) e.stopPropagation()
		clearhidemenu()
		dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
		dropmenuobj.className="topmenu"
		populatemenu(menucontents)

	if (ie4||ns6){
		showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
		dropmenuobj.x=getposOffset(obj, "left")
		if (is_nav){
			dropmenuobj.y=getposOffset(obj, "top")+29
		}else {
			dropmenuobj.y=getposOffset(obj, "top")+29
		}
		dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "leftedge")+obj.offsetWidth+horizontaloffset+"px"
		dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+"px"
	}

	return clickreturnvalue()
}
function dropdownmenuh(obj, e, menucontents, menuwidth){
	if (window.event) event.cancelBubble=true
	else if (e.stopPropagation) e.stopPropagation()
		clearhidemenu()
		dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
		populatemenu(menucontents)

	if (ie4||ns6){
		showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
		dropmenuobj.x=getposOffset(obj, "left")-obj.offsetWidth-2

		dropmenuobj.y=getposOffset(obj, "top")+4

		dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "leftedge")+obj.offsetWidth+horizontaloffset+"px"
		dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+"px"
	}

	return clickreturnvalue()
}
function dropdownmenu_h(obj, e, menucontents, menuwidth){
	tmpobj.className=""
	tmpobj=obj
	obj.className="current"
	if (window.event) event.cancelBubble=true
	else if (e.stopPropagation) e.stopPropagation()
		clearhidemenu()
		dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
		populatemenu(menucontents)

	if (ie4||ns6){
		showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
		dropmenuobj.x=getposOffset(obj, "left")-obj.offsetWidth

		dropmenuobj.y=getposOffset(obj, "top")

		dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "leftedge")+obj.offsetWidth+horizontaloffset+"px"
		dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+"px"
	}

	return clickreturnvalue()
}

function clickreturnvalue(){
	if (ie4||ns6) return false
		else return true
}

function contains_ns6(a, b) {
	while (b.parentNode)
		if ((b = b.parentNode) == a)
		return true;
	return false;
}

function dynamichide(e){
	if (ie4&&!dropmenuobj.contains(e.toElement))
		delayhidemenu()
	else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
		delayhidemenu()
}

function hidemenu(e){
	if (typeof dropmenuobj!="undefined"){
		if (ie4||ns6)
		dropmenuobj.style.visibility="hidden"
	}
	tmpobj.className=""
}

function delayhidemenu(){
	if (ie4||ns6)
	delayhide=setTimeout("hidemenu()",disappeardelay)
}

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