function stablishCSS(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;
	}
  }
}