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;
     }
   }
}