//Drop Down/ Overlapping Content: http://www.dynamicdrive.com
//**Updated: Dec 19th, 07': Added ability to dynamically populate a Drop Down content using an external file (Ajax feature)
//**Updated: Feb 29th, 08':
				//1) Added ability to reveal drop down content via "click" of anchor link (instead of default "mouseover")
				//2) Added ability to disable drop down content from auto hiding when mouse rolls out of it
				//3) Added hidediv(id) public function to directly hide drop down div dynamically

//**Updated: Sept 11th, 08': Fixed bug whereby drop down content isn't revealed onClick of anchor in Safari/ Google Chrome
var flagDD=false;
var dropdowncontent={
	disableanchorlink: true, //when user clicks on anchor link, should link itself be disabled (always true if "revealbehavior" above set to "click")
	
 hidedivclickout: [true, 200], //Set hiding behavior within Drop Down DIV itself: [hide_div_onmouseover?, miliseconds_before_hiding]
 
 
	ajaxloadingmsg: "Loading content. Please wait...", //HTML to show while ajax page is being feched, if applicable
	ajaxbustcache: true, //Bust cache when fetching Ajax 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=="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
	},

	show:function(anchorobj, subobj, e){
		if (!this.isContained(anchorobj, e) || (e && e.type=="click")){
			var e=window.event || e
			if (e.type=="click" && subobj.style.visibility=="visible"){
				subobj.style.visibility="hidden"
				return
			}
			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 + "px"
			subobj.style.top=this.getposOffset(anchorobj, "offsetTop") + verticaloffset + "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"
			flagDD=true;
			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.hidedivclickout[1])
		}
	},

	hidediv:function(subobjid){
		document.getElementById(subobjid).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, revealbehavior){
		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
		if (typeof revealbehavior=="undefined" || revealbehavior=="mouseover"){
			anchorobj.onmouseover=function(e){dropdowncontent.show(this, subobj, e)}
			anchorobj.onmouseout=function(e){dropdowncontent.hide(subobj, subobj, e)}
			if (this.disableanchorlink) anchorobj.onclick=function(){return false}
		}
		else{
			anchorobj.onclick=function(e){
				dropdowncontent.show(this, subobj, e); return false
			}
		}
	}
}

var BrowserDetect = {
    init: function(){
        this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
        this.version = this.searchVersion(navigator.userAgent) ||
        this.searchVersion(navigator.appVersion) ||
        "an unknown version";
        this.OS = this.searchString(this.dataOS) || "an unknown OS";
    },
    searchString: function(data){
        for (var i = 0; i < data.length; i++) {
            var dataString = data[i].string;
            var dataProp = data[i].prop;
            this.versionSearchString = data[i].versionSearch || data[i].identity;
            if (dataString) {
                if (dataString.indexOf(data[i].subString) != -1) 
                    return data[i].identity;
            }
            else 
                if (dataProp) 
                    return data[i].identity;
        }
    },
    searchVersion: function(dataString){
        var index = dataString.indexOf(this.versionSearchString);
        if (index == -1) 
            return;
        return parseFloat(dataString.substring(index + this.versionSearchString.length + 1));
    },
    dataBrowser: [{
        string: navigator.userAgent,
        subString: "Chrome",
        identity: "Chrome"
    }, {
        string: navigator.userAgent,
        subString: "OmniWeb",
        versionSearch: "OmniWeb/",
        identity: "OmniWeb"
    }, {
        string: navigator.vendor,
        subString: "Apple",
        identity: "Safari",
        versionSearch: "Version"
    }, {
        prop: window.opera,
        identity: "Opera"
    }, {
        string: navigator.vendor,
        subString: "iCab",
        identity: "iCab"
    }, {
        string: navigator.vendor,
        subString: "KDE",
        identity: "Konqueror"
    }, {
        string: navigator.userAgent,
        subString: "Firefox",
        identity: "Firefox"
    }, {
        string: navigator.vendor,
        subString: "Camino",
        identity: "Camino"
    }, { // for newer Netscapes (6+)
        string: navigator.userAgent,
        subString: "Netscape",
        identity: "Netscape"
    }, {
        string: navigator.userAgent,
        subString: "MSIE",
        identity: "Explorer",
        versionSearch: "MSIE"
    }, {
        string: navigator.userAgent,
        subString: "Gecko",
        identity: "Mozilla",
        versionSearch: "rv"
    }, { // for older Netscapes (4-)
        string: navigator.userAgent,
        subString: "Mozilla",
        identity: "Netscape",
        versionSearch: "Mozilla"
    }],
    dataOS: [{
        string: navigator.platform,
        subString: "Win",
        identity: "Windows"
    }, {
        string: navigator.platform,
        subString: "Mac",
        identity: "Mac"
    }, {
        string: navigator.userAgent,
        subString: "iPhone",
        identity: "iPhone/iPod"
    }, {
        string: navigator.platform,
        subString: "Linux",
        identity: "Linux"
    }]

};

BrowserDetect.init();

limit = 0;
function checkElementAndParent(element)
{
	try{
		if(limit<100)
		{
			limit++;
			//console.dir(element);
			if(element.nodeName && element.nodeName == "BODY")
			{
				jQuery(".Dropdown").css({"visibility" : "hidden"});
				jQuery(".closeDropdown").css({"visibility" : "hidden"});
			}
			else
			{
				var again = true;
				if(element.nodeName=="DIV" || element.nodeName=="A")
				{
					if(element.className && element.className=="Dropdown" || element.className=="DropDownMenu")
						again = false;
				}
				if(again)
				{
					checkElementAndParent(element.parentNode);
				}
			}
		}
	}
	catch(e){}
}

jQuery(document).ready
(
	function()
	{
		$("body").click(function(event){
			if(flagDD){
				if(BrowserDetect.browser != 'Explorer')
					checkElementAndParent( event.originalTarget );
				else
					checkElementAndParent( event.srcElement );
			}
		});

	}
);