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;
    }
  }
}

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 checkBrowserWidth()
{
	var theWidth =  document.documentElement.clientWidth;
	if (theWidth > 950)
	{
		document.getElementById("unisu").style.width="950px";
		document.getElementById("contenuto").style.width="950px";
		document.getElementById("footer").style.width="950px";
		document.getElementById("shadow").style.width="950px";		
	}
	else
	{
		document.getElementById("unisu").style.width="auto";
		document.getElementById("contenuto").style.width="auto";
		document.getElementById("footer").style.width="auto";
		document.getElementById("shadow").style.width="auto";				
	}
	document.getElementById("barra-sfumatura").style.width="auto";
	return true;
};
// nascondi ul
function nascondiul(apri){
	if(apri=='1'){	document.getElementById("menu-laterale-ul1").style.display="block";
	} else {  document.getElementById("menu-laterale-ul1").style.display="none"; }
if(apri=='2'){	document.getElementById("menu-laterale-ul2").style.display="block";
	} else {  document.getElementById("menu-laterale-ul2").style.display="none"; }
	if(apri=='3'){	document.getElementById("menu-laterale-ul3").style.display="block";
	} else {  document.getElementById("menu-laterale-ul3").style.display="none"; }
	}
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);

function fermadiv(nodiv){
	for(i=1; i<=5; i++){
		if(document.getElementById("singoli-componenti-"+i)) document.getElementById("singoli-componenti-"+i).style.display="none";
	}
	if(nodiv>0){
		if(document.getElementById("singoli-componenti-"+nodiv)) document.getElementById("singoli-componenti-"+nodiv).style.display="block";
	}
}