function setActiveStyleSheet(title) {  
	var i, a, main;  
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {    
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {      
			a.disabled = true;      
			if(a.getAttribute("title") == title) a.disabled = false;    
		}  
	}
}
function getActiveStyleSheet() {  
	var i, a;  
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {    
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");  
	}  
	return null;
}
function getPreferredStyleSheet() {  
	var i, a;  
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {    
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title")) return a.getAttribute("title");  
	}  
	return null;
}
function createCookie(name,value,days) {  
	if (days) {    
		var date = new Date();    
		date.setTime(date.getTime()+(days*24*60*60*1000));    
		var expires = "; expires="+date.toGMTString();  
	} else { 
		expires = "";  
		document.cookie = name+"="+value+expires+"; path=/";
	}
}
function readCookie(name) {  
	var nameEQ = name + "=";  
	var ca = document.cookie.split(';');  
	for(var i=0;i < ca.length;i++) {    
		var c = ca[i];    
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}  
	return null;
}
window.onload = function(e) {  
	var cookie = readCookie("style");  
	var title = cookie ? cookie : getPreferredStyleSheet();  
	setActiveStyleSheet(title);
}
window.onunload = function(e) {  
	var title = getActiveStyleSheet();  
	createCookie("style", title, 365);
}
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();setActiveStyleSheet(title);