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";
	},
	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: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		}
	]
};

BrowserDetect.init();

var bIE6=(BrowserDetect.browser=="Explorer" && BrowserDetect.version<=6)




var bWebsiteLoaded=false;
var bPopupVisiable=false, nPopupWidth=0, nPopupHeight=0;

function fPopupLayerPosition(){
	if(!bPopupVisiable) return;
	var obj=document.getElementById("oPopupLayerFrame");
	var nLeft=(document.body.offsetWidth-nPopupWidth)/2 +"px";
	var nTop=(document.documentElement.clientHeight-nPopupHeight)/2;
	if(bIE6) nTop+=document.documentElement.scrollTop;
	nTop=(nTop<=0 ? 0 : nTop+"px");
	obj.style.width=nPopupWidth;
	obj.style.height=nPopupHeight;
	obj.style.left=nLeft;
	obj.style.top=nTop;

	document.getElementById("oPopupLayer").style.height=document.body.offsetHeight;
}

function fPopupLayer(sURL, nWidth, nHeight){
	if(!bWebsiteLoaded) return;   // making sure everything is loaded
	nPopupWidth=(nWidth||540);
	nPopupHeight=(nHeight||400);
	var obj=document.getElementById("oPopupLayerFrame");
	bPopupVisiable=true;
	fPopupLayerPosition();
	if(sURL!="portfolio") obj.innerHTML="<iframe src=\""+ sURL +"\" style=\"width:"+ nPopupWidth +"px; height:"+ nPopupHeight +"px;\" frameborder=\"0\"></iframe>"

	obj.style.width=nPopupWidth +"px";
	obj.style.height=nPopupHeight +"px";
	
	obj.style.display="block";
	document.getElementById("oPopupLayer").style.height=document.body.offsetHeight;
	document.getElementById("oPopupLayer").style.display="block";
}

function fClosePopupLayer(url){

	bPopupVisiable=false;
	nPopupWidth=0;
	nPopupHeight=0;

	document.getElementById("oPopupLayerFrame").style.display="none";
	document.getElementById("oPopupLayer").style.display="none";
	top.location.href=url;

}


// ie7 & ffx uses fixed positioning which is not supperted in ie6
if(bIE6) window.attachEvent("onscroll", fPopupLayerPosition)
window.attachEvent("onresize", fPopupLayerPosition)