function encode(v) {
  return typeof encodeURIComponent == "function" ?
    encodeURIComponent(v) : escape(v);
}
function appendArg(k, v) {
  req_url = req_url.concat("&" + k + "=" + v);
}
function appendEncodedArg(k, v) {
  appendArg(k, encode(v));
}
function sendAdRequest() {
  appendEncodedArg("req", document.location);
  appendEncodedArg("adnum", 2);
  appendEncodedArg("syndid", 998);
  appendEncodedArg("rnd", Math.floor(Math.random() * 1000));
  req_url = req_url.substring(0, 1024);
  req_url = req_url.replace(/%\w?$/, "");
  document.write("<script language='JavaScript1.1' charset='utf-8' "
    + "src='http://impservice.fy.youdao.com/imp/request.s?" + req_url.slice(1)
    + "'><\/script>");
  req_url = null;
}
var req_url = "";
sendAdRequest();