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;
    }
  }
}



window.onload = function(e) {

 if (screen.width <=800)
	{
   setActiveStyleSheet('bobo');
   }
else 
	{
    setActiveStyleSheet('baba');
   }
 }