// JavaScript Document//STYLE SWITCHERfunction showMenu(nomeMenu){
		


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;	
	} 
    }
  };
 return false;
}

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");
  }
  return null;
}

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");
  }
  
  return null;
}

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;
}

function setFontSize(size) {
	var body = document.getElementsByTagName('body')[0];
	var percentuale = "75%";
	if (size == 1) percentuale = "60%";
	if (size == 2) percentuale = "75%";
	if (size == 3) percentuale = "115%";
	body.style.fontSize = percentuale;
	createCookie('fontUtente',size,365);
}

function checkBrowser(){
	
	
	 if(navigator.appName == "Microsoft Internet Explorer"){
	 	
	 	if(navigator.appVersion.indexOf("MSIE 8") > -1)
	 		return 'AL';
	 	else
	 		return 'IE';
	 }
	  		 
	 else 
		return 'AL';
}

window.onload = function(e) {
 
  var title = checkBrowser();

  setActiveStyleSheet(title);
  var size = readCookie('fontUtente');
	 if(size) {setFontSize(size);}
  else{size=2;}
  createCookie('fontUtente',size,365);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet(); 
  createCookie("style",title,365);
}