// found here: http://ilovethecode.com/Javascript/Javascript-Tutorials-How_To-Easy/Get_Query_String_Using_Javascript.shtml

var qs = window.location.search.substring(1);

function getQuery(opt) {
    var opts = qs.split("&");
    for (i = 0; i < opts.length; i++) {
        if (opts[i] == opt) return '';

        ft = opts[i].split("=");
        if (ft[0] == opt) {
            return ft[1];
        }
    }
}