function leggiCookie(Nome) 
{
	var nameEQ = Nome + "=";
	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 unescape(c.substring(nameEQ.length, c.length));
	}
	
	return null;
}