var querystring = window.location.search.substring(1);
var requestArray = querystring.split("&");
      
function request(VARNAME) {
    var name;
    for (var i in requestArray) {
       name = requestArray[i].substring(0,requestArray[i].indexOf("="));
       if (name == VARNAME) {
        return requestArray[i].substring(requestArray[i].indexOf("=") + 1);
       }
    }
    return false;
}