function SetCookie(name,value){
var exp = new Date();
exp.setYear(exp.getFullYear()+1);
document.cookie = name + "=" + value + ";path=/;expires=" + exp.toGMTString();
}

function GetCookie(name){
var dc = document.cookie;
var prefix = name + "=";
var begin = dc.indexOf("; " + prefix);
if (begin == -1) {
begin = dc.indexOf(prefix);
if (begin != 0) return null;
} else {
begin += 2;
}
var end = document.cookie.indexOf(";", begin);
if (end == -1) {end = dc.length;}
return unescape(dc.substring(begin + prefix.length, end));
}