//Drop Down/ Overlapping Content: http://www.dynamicdrive.com
//Last updated: Dec 19th, 07': Added ability to dynamically populate a Drop Down content using an external file (Ajax feature)

var dropdowncontent={
 delaybeforehide: 1000, //set delay in milliseconds before content box disappears onMouseout (1000=1 sec)
	disableanchorlink: false, //when user clicks on anchor link, should it be disabled?
	ajaxloadingmsg: "Loading content. Please wait...", //HTML to show while ajax page is being feched
	ajaxbustcache: true, //Bust cache when fetching pages?

	getposOffset:function(what, offsettype){
		return (what.offsetParent)? what[offsettype]+this.getposOffset(what.offsetParent, offsettype) : what[offsettype]
	},

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

	show:function(anchorobj, subobj, e){
//		if (!this.isContained(anchorobj, e)){
// mnaumanm : due to this check menu was not working on safai and now its is workin on Safari + firefox +IE 		
			var horizontaloffset=(subobj.dropposition[0]=="left")? -(subobj.offsetWidth-anchorobj.offsetWidth) : 0 //calculate user added horizontal offset
			var verticaloffset=(subobj.dropposition[1]=="top")? -subobj.offsetHeight : anchorobj.offsetHeight //calculate user added vertical offset
			subobj.style.left=this.getposOffset(anchorobj, "offsetLeft") + (horizontaloffset+40) + "px"
			subobj.style.top=this.getposOffset(anchorobj, "offsetTop")+(verticaloffset+10)+"px"
			subobj.style.clip=(subobj.dropposition[1]=="top")? "rect(auto auto auto 0)" : "rect(0 auto 0 0)" //hide drop down box initially via clipping
			subobj.style.visibility="visible"
			subobj.startTime=new Date().getTime()
			subobj.contentheight=parseInt(subobj.offsetHeight)
			if (typeof window["hidetimer_"+subobj.id]!="undefined") //clear timer that hides drop down box?
				clearTimeout(window["hidetimer_"+subobj.id])
			this.slideengine(subobj, (subobj.dropposition[1]=="top")? "up" : "down")
//		}
	},

	curveincrement:function(percent){
		return (1-Math.cos(percent*Math.PI)) / 2 //return cos curve based value from a percentage input
	},

	slideengine:function(obj, direction){
		var elapsed=new Date().getTime()-obj.startTime //get time animation has run
		if (elapsed<obj.glidetime){ //if time run is less than specified length
			var distancepercent=(direction=="down")? this.curveincrement(elapsed/obj.glidetime) : 1-this.curveincrement(elapsed/obj.glidetime)
			var currentclip=(distancepercent*obj.contentheight)+"px"
			obj.style.clip=(direction=="down")? "rect(0 auto "+currentclip+" 0)" : "rect("+currentclip+" auto auto 0)"
			window["glidetimer_"+obj.id]=setTimeout(function(){dropdowncontent.slideengine(obj, direction)}, 10)
		}
		else{ //if animation finished
			obj.style.clip="rect(0 auto auto 0)"
		}
	},

	hide:function(activeobj, subobj, e){
		if (!dropdowncontent.isContained(activeobj, e)){
			window["hidetimer_"+subobj.id]=setTimeout(function(){
				subobj.style.visibility="hidden"
				subobj.style.left=subobj.style.top=0
				clearTimeout(window["glidetimer_"+subobj.id])
			}, dropdowncontent.delaybeforehide)
		}
	},

	closeFilter:function(content){
		var _div=document.getElementById(content);
		_div.style.visibility = 'hidden';
	},

	ajaxconnect:function(pageurl, divId){
		var page_request = false
		var bustcacheparameter=""
		if (window.XMLHttpRequest) // if Mozilla, IE7, Safari etc
			page_request = new XMLHttpRequest()
		else if (window.ActiveXObject){ // if IE6 or below
			try {
			page_request = new ActiveXObject("Msxml2.XMLHTTP")
			} 
			catch (e){
				try{
				page_request = new ActiveXObject("Microsoft.XMLHTTP")
				}
				catch (e){}
			}
		}
		else
			return false
		document.getElementById(divId).innerHTML=this.ajaxloadingmsg //Display "fetching page message"
		page_request.onreadystatechange=function(){dropdowncontent.loadpage(page_request, divId)}
		if (this.ajaxbustcache) //if bust caching of external page
			bustcacheparameter=(pageurl.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
		page_request.open('GET', pageurl+bustcacheparameter, true)
		page_request.send(null)
	},

	loadpage:function(page_request, divId){
		if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)){
			document.getElementById(divId).innerHTML=page_request.responseText
		}
	},

 init:function(anchorid, pos, glidetime){
		var anchorobj=document.getElementById(anchorid)
		var subobj=document.getElementById(anchorobj.getAttribute("rel"))
		var subobjsource=anchorobj.getAttribute("rev")
		if (subobjsource!=null && subobjsource!="")
			this.ajaxconnect(subobjsource, anchorobj.getAttribute("rel"))
		subobj.dropposition=pos.split("-")
		subobj.glidetime=glidetime || 1000
		subobj.style.left=subobj.style.top=0
		anchorobj.onclick=function(e){dropdowncontent.show(this, subobj, e)}
		//anchorobj.onmouseout=function(e){dropdowncontent.hide(subobj, subobj, e)}
		//if (this.disableanchorlink) anchorobj.onclick=function(){return false}
		//subobj.onmouseout=function(e){dropdowncontent.hide(this, subobj, e)}
	}
	
}

function onclick(e) {
	if (!e) e=window.event;
	var divs=1;
	while(true){
		var dName='contentDiv'+divs;
		if (document.getElementById(dName)){
			divs++;
		}
		else{
			break;
		}
	}
	for (i=0; i<divs; i++){
		var dName='contentDiv'+(i+1);
		var aName='filterLink'+(i+1);
		var obj=document.getElementById(dName);		
		var curleft = curtop = 0;
		var width = height = 0;
		var relW = relH = 0;
		if (obj && obj.offsetParent) {
			curleft = obj.offsetLeft
			curtop = obj.offsetTop
			while (obj = obj.offsetParent) {
				curleft += obj.offsetLeft
				curtop += obj.offsetTop
			}
			obj=document.getElementById(dName);
			if (obj && obj.style.visibility=='visible'){
				width=obj.offsetWidth;
				height=obj.offsetHeight;			
			}
		}
		relW=curleft+width;
		relH=curtop+height;
		//alert("Div X,Y " + curleft + "," + curtop)
		//alert("Div Width,height " + width + "," + height)	
		//alert("Client X,Y " + e.clientX +" ," + e.clientY);
		if (obj && obj.style.visibility=='visible' && whichTagId(e) != aName && whichTagType(e) != "checkbox" )
		if ( (e.clientX > relW || e.clientX < curleft) || (e.clientY > relH || e.clientY < curtop) ){
			//alert('Hide Div');
			dropdowncontent.closeFilter(dName);
		}
		selectAll(e);
	}
	
}	

function whichTagId(e) {
	var targ
	if (!e) var e = window.event
	if (e.target) 
		targ = e.target
	else if (e.srcElement) 
		targ = e.srcElement
	if (targ.nodeType == 3) 
		targ = targ.parentNode
	var id
	id=targ.id;
	return id;
}

function whichTagType(e) {
	var targ
	if (!e) var e = window.event
	if (e.target) 
		targ = e.target
	else if (e.srcElement) 
		targ = e.srcElement
	if (targ.nodeType == 3) 
		targ = targ.parentNode
	return targ.type;
}

function selectAll(e) {
	var targ
	if (!e) var e = window.event
	if (e.target) 
		targ = e.target
	else if (e.srcElement) 
		targ = e.srcElement
	if (targ.nodeType == 3) 
		targ = targ.parentNode
		
	if (targ.type=="checkbox" && targ.value=="SHOW_ALL"){	
		var cb=document.getElementsByName(targ.name);
		for(i=1; i<cb.length; i++){
			if (targ.checked==true){
				cb[i].checked=false;
				cb[i].disabled=true;				
			}
			else {
				cb[i].checked=false;
				cb[i].disabled=false;									
			}
		}
	}
	else if (targ.type=="checkbox" && targ.value !="SHOW_ALL"){	
		var cb=document.getElementsByName(targ.name);
		for(i=0; i<cb.length; i++){
			if (cb[i].value=="<%=AimsConstants.FILTER_SHOW_ALL %>"){
				cb[i].checked=false;
			}
		}		
	}
}

function singleSelect(cbName,selValue,form){
	var cb=document.getElementsByName(cbName);
	if (selValue=="SHOW_ALL"){
		cb[0].checked=true;
		for(i=1; i<cb.length; i++){
			cb[i].checked=false;
			cb[i].disabled=true;
		}		
	}
	else {
		for(i=0; i<cb.length; i++){
			if (cb[i].value==selValue){
				cb[i].checked=true;
				cb[i].disabled=false;
			}
			else {
				cb[i].checked=false;
				cb[i].disabled=false;
			}
		}
	}
	if (form.page_id){
		form.page_id.value="1";
	}	
	form.submit();	
}

function validateFilter(cbName,form){
	var cb=document.getElementsByName(cbName);
	var flag=false;
	for(i=0; i<cb.length; i++){
		if (cb[i].checked==true){
			flag=true;
			break;
		}
	}
	if (flag==false){
		alert("Please select at least one value.");
		return false;
	}
	if (form.page_id){
		form.page_id.value="1";
	}
	form.submit();	
}