var xmlhttp,alerted;
/*@cc_on @*/
/*@if (@_jscript_version >= 5)
  try {
  xmlhttp=new ActiveXObject("Msxml2.XMLHTTP")
 } catch (e) {
  try {
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
  } catch (E) {
   alert("You must have Microsofts XML parsers available")
  }
 }
@else
 alert("You must have JScript version 5 or above.")
 xmlhttp=false
 alerted=true
@end @*/
if (!xmlhttp && !alerted) {
 try {
  xmlhttp = new XMLHttpRequest();
 } catch (e) {
  alert("对不起，你的浏览器不支持xmlhttp。")
 }
}

function go(strUrl) {
if (xmlhttp) {
  xmlhttp.open("post", strUrl,true);
  xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  xmlhttp.onreadystatechange=RSchange;
  xmlhttp.send(null);
 }
}

function RSchange(){
  if (xmlhttp.readyState==4) {
  }
}