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JScript code:

Ajax={
returnedValue:null,
request:function(url,mode,callback){
var xmlHttp = null;
sendRequest(url,mode);
//·¢ËÍÇëÇó
function sendRequest(url,mode){
createXMLHttpRequest();
xmlHttp.onreadystatechange = processRequest;
xmlHttp.open("GET", url, mode);
xmlHttp.send(null);
}
//´´½¨XMLHttpRequest¶ÔÏó
function createXMLHttpRequest(){
if(window.XMLHttpRequest){
xmlHttp = new XMLHttpRequest();
if(xmlHttp.overrideMimeType)
xmlHttp.overrideMimeType("text/html");
}
else if(window.ActiveXObject){
try{
xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch(e){
try{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e){
alert("²»ÄÜ´´½¨XMLHttpRequest ¶ÔÏóʵÀý.");
return false;
}
}
}
}
//´¦ÀíÇëÇó
function processRequest(){
if (xmlHttp.readyState == 4){
if (xmlHttp.status == 200)


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