function getCookie(Name) { 
	var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
	if (document.cookie.match(re)) //if cookie found
	return document.cookie.match(re)[0].split("=")[1]; //return its value
	return null;
}
function setCookie(name, value, days) {
	var expireDate = new Date();
	//set "expstring" to either future or past date, to set or delete cookie, respectively
	var expstring=(typeof days!="undefined")? expireDate.setDate(expireDate.getDate()+parseInt(days)) : expireDate.setDate(expireDate.getDate()-5);
	document.cookie = name+"="+value+"; expires="+expireDate.toGMTString()+"; path=/";
}
function deleteCookie(name){
	setCookie(name, "moot");
}
function setStylesheet(title) {
	var i, cacheobj;
	for(i=0; (cacheobj=document.getElementsByTagName("link")[i]); i++) {
		if(cacheobj.getAttribute("rel").indexOf("style") != -1 && cacheobj.getAttribute("title")) {
			cacheobj.disabled = true;
		if(cacheobj.getAttribute("title") == title)
			cacheobj.disabled = false; //enable chosen style sheet
		}
	}
}
function chooseStyle(styletitle, days){
	if (document.getElementById){
		setStylesheet(styletitle);
		setCookie("mysheet", styletitle, days);
	}
}
var selectedtitle=getCookie("mysheet");
if (document.getElementById && selectedtitle!=null) //load user chosen style sheet if there is one stored
	setStylesheet(selectedtitle);