function setActiveStyleSheet(title) {
	var i, a, main;
	//Cogemos el actual
	a = document.getElementsByTagName("link")[0];
	if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") == "txtp") {	//Asi para IE
//	if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") == "txtp") {	//Asi para Fire
	
		a.disabled = true;
		
		if(a.getAttribute("title") == title){
		
			a.disabled = false;
			
			if(document.images["apequena"]!=null){
				
				document.images["apequena"].src="../Images/Icones/Accessibilitat/mt11_1.gif";
				
				document.images["amediana"].src="../Images/Icones/Accessibilitat/mt14_0.gif";
				
				if(document.images["agrande"] != null){
					document.images["agrande"].src="../Images/Icones/Accessibilitat/mt17_0.gif";
				}
				
			
			}
		
		}
	
	}
	
	a = document.getElementsByTagName("link")[1];
	
	if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") == "txtm" ) {
	
		a.disabled = true;
		
		if(a.getAttribute("title") == title){
		
			a.disabled = false;
			
			if(document.images["amediana"]!=null){
							
				document.images["apequena"].src="../Images/Icones/Accessibilitat/mt11_0.gif";
				
				document.images["amediana"].src="../Images/Icones/Accessibilitat/mt14_1.gif";

				if(document.images["agrande"] != null){
					document.images["agrande"].src="../Images/Icones/Accessibilitat/mt17_0.gif";
				}		
			}
		
		}
	
	}
	
	a = document.getElementsByTagName("link")[2];
	
	if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
	
		a.disabled = true;
		
		if(a.getAttribute("title") == title){
		
			a.disabled = false;
			
			if(document.images["agrande"]!=null){
			
				document.images["apequena"].src="../Images/Icones/Accessibilitat/mt11_0.gif";
				
				document.images["amediana"].src="../Images/Icones/Accessibilitat/mt14_0.gif";
				
				document.images["agrande"].src="../Images/Icones/Accessibilitat/mt17_1.gif";
			
			}
		
		}
	
	}

	
	
}

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");
	
	}
	
	a = document.getElementsByTagName("link")[0]
	
	return a.getAttribute("title");

}
	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");}
	
	}
	
	a = document.getElementsByTagName("link")[0];
	
	return a.getAttribute("title");
	
	}
	
	
function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*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;
}
/*
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);
}