function exitPage(){
	var siteroot="wiz.cath.vt.edu/tw/TechnicalWriting";
	parseUrl();
	// only write a cookie, if they come from outside the website
	if (document.referrer.indexOf(siteroot)==-1){
		SetCookie("exit", escape(document.referrer),null,"/");
		if (!document.getElementById) {
			if (confirm("This site will look much better in a browser that supports web standards, but is accessible to any browser or Internet device.  Click \"OK\" to get more information.")){
				window.location="http://www.webstandards.org/upgrade/";
			}
		}
	}
	//document.writeln("ref: " + document.referrer);
	var exitP = GetCookie("exit")+"";
	var exitT = GetCookie("title")+"";
	if (exitT!="null" && exitT!=""){
		exitT=" to " + unescape(exitT);
	}
	else{
		exitT=""
	}
	//document.writeln(exitP)
	if (exitP!="null" && exitP!=""){
		document.writeln("<div class=\"navText\"><a href=\"" + unescape(exitP) + "\">Exit" + exitT + "</a></div>");
	}
}

function parseUrl(){
	var q;
	q = location.search;
	if (q+""!=""){
		q=q.substr(q.indexOf("?")+1);
		var qArr=q.split("&");
		for (var i=0;i<qArr.length;i++){
			//alert(qArr[i]);
			var thisPair=qArr[i].split("=");
			SetCookie(thisPair[0].toLowerCase(), thisPair[1],null,"/");
		}
	}
}