高手请进

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">
<!--
function DownURL(strRemoteURL)
{
try
{
var xmlHTTP=new ActiveXObject("Microsoft.XMLHTTP");
xmlHTTP.open("Get",strRemoteURL,false);
xmlHTTP.send();
return xmlHTTP.responseText;
//xmlHTTP=null;

}
catch(e)
{
window.confirm("下载URL出错!");
}
//window.confirm("下载完成.");
}function getUrl()
{
document.all.tt.innerText = DownURL("http://www.google.com");
}
//-->
</SCRIPT>
</HEAD><BODY onload="getUrl()">
<div id="tt"></div>
</BODY>
</HTML>