function Set_Cookie(name,value,days) {
   var date = new Date();
   date.setTime(date.getTime()+(days*24*60*60*1000));
   var expires = "; expires="+date.toGMTString();
	document.cookie = name+"="+escape(value)+expires+"; path=/";
}

function Get_Cookie(name) {
	var cookie_array  = document.cookie.split(';');
   if (cookie_array != null) {
	   for(var i=0;i < cookie_array.length;i++) {
		   var crumb = cookie_array[i];
		   while (crumb.charAt(0)==' ') crumb = crumb.substring(1,crumb.length);
		   if (crumb.indexOf(name+"=") == 0) return unescape(crumb.substring(name.length+1,crumb.length));
	   }
   }
	return null;
}


function Erase_Cookie(name) {
	Set_Cookie(name,"",-1);
}