function setStyle(url) {
  if (document.getElementsByTagName) {
    var el = document.getElementsByTagName("link");
    
    for (var i = 0; i < el.length; ++i) {
      if ((el[i].getAttribute("rel").indexOf("style") != -1) && (el[i].getAttribute("title"))) {
        el[i].disabled = true;
        if (el[i].getAttribute("href") == url) el[i].disabled = false;
      }
    }
  }
      
  return null;
}