var cssdropdown={
disappeardelay: 250, //set delay in miliseconds before menu disappears onmouseout
enablereveal: [true, 7], //enable swipe; [true/false, animation steps, smaller is faster]
//enableiframeshim: 1, //enable "iframe shim" in IE5.5 to IE7? (1=yes, 0=no)

dropmenuobj: null, asscmenuitem: null, domsupport: document.all || document.getElementById, standardbody: null, iframeshimadded: false, revealtimers: {},

getposOffset:function(what, offsettype){
	var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
	var parentEl=what.offsetParent;
	var contentDivLeft = document.getElementById("content").offsetLeft;
	while (parentEl!=null){
		if(this.detectBrowser() == 0){ //if IE <8
			totaloffset=(offsettype=="left")? null : totaloffset+parentEl.offsetTop-8;
			parentEl=parentEl.offsetParent;
		}
		else {
			totaloffset=(offsettype=="left")? null : totaloffset+parentEl.offsetTop-12;
			parentEl=parentEl.offsetParent;
		}
	}
	return totaloffset;
},

css:function(el, targetclass, action){
	var needle=new RegExp("(^|\\s+)"+targetclass+"($|\\s+)", "ig");
	if (action=="check")
		return needle.test(el.className);
	else if (action=="remove")
		el.className=el.className.replace(needle, "");
	else if (action=="add" && !needle.test(el.className))
		el.className+=" "+targetclass;
},

showmenu:function(dropmenu, e){
	if (this.enablereveal[0]){
		if (!dropmenu._trueheight || dropmenu._trueheight<10)
			dropmenu._trueheight=dropmenu.offsetHeight;
		clearTimeout(this.revealtimers[dropmenu.id]);
		dropmenu.style.height=dropmenu._curheight=0;
		dropmenu.style.overflow="hidden";
		dropmenu.style.visibility="visible";
		this.revealtimers[dropmenu.id]=setInterval(function(){cssdropdown.revealmenu(dropmenu)}, 10);
	}
	else{
		dropmenu.style.visibility="visible";
	}
	this.css(this.asscmenuitem, "selected", "add");
},

revealmenu:function(dropmenu, dir){
	var curH=dropmenu._curheight, maxH=dropmenu._trueheight, steps=this.enablereveal[1];
	if (curH<maxH){
		var newH=Math.min(curH, maxH);
		dropmenu.style.height=newH+"px";
		dropmenu._curheight= newH + Math.round((maxH-newH)/steps) + 1;
	}
	else { //if done revealing menu
		dropmenu.style.height="auto";
		dropmenu.style.overflow="hidden";
		clearInterval(this.revealtimers[dropmenu.id]);
	}
},

dropit:function(obj, e, dropmenuID){
	if (this.dropmenuobj!=null) //hide previous menu
		this.hidemenu() //hide menu
	this.clearhidemenu()
	this.dropmenuobj=document.getElementById(dropmenuID) //reference drop down menu
	this.asscmenuitem=obj //reference associated menu item
	this.showmenu(this.dropmenuobj, e)
	this.dropmenuobj.y=this.getposOffset(obj, "top")
	//<!--[if IE 4-7]>
	if(this.detectBrowser() == 0)
		this.dropmenuobj.style.left=document.getElementById("content").getBoundingClientRect().left-2+"px";
	else
		this.dropmenuobj.style.left=document.getElementById("content").offsetLeft+"px";
	//<![endif]-->
	this.dropmenuobj.style.top=this.dropmenuobj.y+obj.offsetHeight+1+"px"
	//this.positionshim() //call iframe shim function
},

detectBrowser:function() {
	if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)) {
		var ieversion=new Number(RegExp.$1)
		if ((ieversion >= 4) && (ieversion < 8 ))
			return 0;
	}
},

isContained:function(m, e){
	var e=window.event || e;
	var c=e.relatedTarget || ((e.type=="mouseover")? e.fromElement : e.toElement);
	while (c && c!=m)try {c=c.parentNode} catch(e){c=m};
	if (c==m)
		return true;
	else
		return false;
},

dynamichide:function(m, e){
	if (!this.isContained(m, e)){
		this.delayhidemenu();
	}
},

delayhidemenu:function(){
	this.delayhide=setTimeout("cssdropdown.hidemenu()", this.disappeardelay);
},

hidemenu:function(){
	this.css(this.asscmenuitem, "selected", "remove");
	this.dropmenuobj.style.visibility='hidden';
	this.dropmenuobj.style.left=this.dropmenuobj.style.top="-1000px";
},

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

addEvent:function(target, functionref, tasktype){
	if (target.addEventListener)
		target.addEventListener(tasktype, functionref, false);
	else if (target.attachEvent)
		target.attachEvent('on'+tasktype, function(){return functionref.call(target, window.event)});
},

start:function(){
	if (!this.domsupport)
		return;
	this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body;
	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");
				var asscdropdownmenu=document.getElementById(relvalue);
				this.addEvent(asscdropdownmenu, function(){cssdropdown.clearhidemenu()}, "mouseover");
				this.addEvent(asscdropdownmenu, function(e){cssdropdown.dynamichide(this, e)}, "mouseout");
				this.addEvent(asscdropdownmenu, function(){cssdropdown.delayhidemenu()}, "click");
				this.addEvent(menuitems[i], function(e){
					if (!cssdropdown.isContained(this, e)){
						var evtobj=window.event || e;
						cssdropdown.dropit(this, evtobj, this.getAttribute("rel"));
					}
				}, "mouseover")
				this.addEvent(menuitems[i], function(e){cssdropdown.dynamichide(this, e)}, "mouseout");
				this.addEvent(menuitems[i], function(){cssdropdown.delayhidemenu()}, "click");
			}
		} //end inner for
	} //end outer for
	/*if (this.enableiframeshim && document.all && !window.XDomainRequest && !this.iframeshimadded){ //enable iframe shim in IE5.5 thru IE7?
		document.write('<IFRAME id="iframeshim" src="about:blank" frameBorder="0" scrolling="no" style="left:0; top:0; position:absolute; display:none;z-index:90; background: transparent;"></IFRAME>')
		this.shimobject=document.getElementById("iframeshim") //reference iframe object
		this.shimobject.style.filter='progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)'
		this.iframeshimadded=true
	}*/
} //end start
} //end cssdropdown