// JavaScript Document
function changecss(theClass,element,value) {
	//Last Updated on June 23, 2009
	//documentation for this script at
	//http://www.shawnolson.net/a/503/altering-css-class-attributes-with-javascript.html
	 var cssRules;

	 var added = false;
	 for (var S = 0; S < document.styleSheets.length; S++){

    if (document.styleSheets[S]['rules']) {
	  cssRules = 'rules';
	 } else if (document.styleSheets[S]['cssRules']) {
	  cssRules = 'cssRules';
	 } else {
	  //no rules found... browser unknown
	 }

	  for (var R = 0; R < document.styleSheets[S][cssRules].length; R++) {
	   if (document.styleSheets[S][cssRules][R].selectorText == theClass) {
	    if(document.styleSheets[S][cssRules][R].style[element]){
	    document.styleSheets[S][cssRules][R].style[element] = value;
	    added=true;
		break;
	    }
	   }
	  }
	  if(!added){
	  if(document.styleSheets[S].insertRule){
			  document.styleSheets[S].insertRule(theClass+' { '+element+': '+value+'; }',document.styleSheets[S][cssRules].length);
			} else if (document.styleSheets[S].addRule) {
				document.styleSheets[S].addRule(theClass,element+': '+value+';');
			}
	  }
	 }
	}

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 var 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 eraseCookie(name) {
	createCookie(name,"",-1);
}
function controllaCookie(){
	
	var a = readCookie("lan");
	if (a==""){
		alert("FAIL");
		createCookie("lan","ita",10000);
		
	}
}
function cambia(){
	
	if (readCookie("lan")=="ita"){
		 eraseCookie("lan");
		createCookie("lan","eng",10000);}
		else{
			 eraseCookie("lan");
		createCookie("lan","ita",10000);
			}
			alert(readCookie("lan"));
}