function initRequest(url) {
    var xmlhttp;
    /*@cc_on
    @if (@_jscript_version >= 5)
      try {
        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
      } catch (e) {
        try {
          xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (E) {
          xmlhttp = false;
        }
      }
    @else
    xmlhttp = false;
    @end @*/
    if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
      try {
        xmlhttp = new XMLHttpRequest();
      } catch (e) {
        xmlhttp = false;
      }
    }
    return xmlhttp;
}