var expires = 999;
var today = new Date();
var expr = new Date(today.getTime() + (expires * 86400000));
var idnum = window.location.search.substring(1);
if (idnum) {
var cookieName = 'affiliate';
var value = idnum;
var path = '/';
document.cookie = cookieName + "=" +escape(value) +
( (expires) ? ";expires=" + expr.toGMTString() : "") +
( (path) ? ";path=" + path : "");
}