function createCookie(name,val,expDays) {
	var expireDate = new Date();
	expireDate.setTime(expireDate.getTime() + expDays*24*3600*1000);
	document.cookie = name + "=" + escape(val) + ";expires=" + expireDate.toGMTString();
}
     
function readCookie(name) {
	var st,end;
	st = document.cookie.indexOf(name + "=");
	if (st >= 0) {
		st += name.length + 1;
		end = document.cookie.indexOf(";",st);
		if (end < 0) 
			end = document.cookie.length;
		return unescape(document.cookie.substring(st,end));
	}
	return "";
}