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 createCookie(name,value,daes) {
if (daes) {
var date = new Date();
date.setTime(date.getTime()+(daes*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;
}


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;
 }
 
 
 
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);
}