function canviarIdioma(idioma){ 
	setCookie('idioma', idioma);
} 

function setCookie(name,value){ 
	var valor = name+ "=" +escape(value);
	if (name == "idioma"){
		var data = new Date();
		data = new Date ((data.getFullYear() + 10),data.getMonth(),data.getDate() );
		valor += ";expires=" + data.toGMTString();		
	}
	valor += "; path=/";
	document.cookie=valor;
} 

// returns value of cookie or null if cookie does not exist
function getCookie(name) {
 	var result = null;
 	var myCookie = " " + document.cookie + ";";
 	var searchName = " " + name + "=";
 	var startOfCookie = myCookie.indexOf(searchName);
	var endOfCookie;
 	if (startOfCookie != -1) {
  		startOfCookie += searchName.length; // skip past name of cookie
  		endOfCookie = myCookie.indexOf(";", startOfCookie);
  		result = unescape(myCookie.substring(startOfCookie, endOfCookie));
 	}
 	return result;
}
function delCookie(name){ 
	if(getCookie(name)){ 
		document.cookie=name + "="
		+";expires=Thu,01-Jan-70 00:00:01 GMT"
		+ "; path=/";
	} 
}