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var gg = false;
var check = false;
function send_request(url){
if(window.XMLHttpRequest){
gg = new XMLHttpRequest();
}
else if(window.ActiveXObject){
try{
gg = new ActiveXObject("Msxml2.XMLHTTP");
}catch(e){
try{
gg = new ActiveXObject("Microsoft.XMLHTTP");
}catch(e){}
}
}
if(!gg){
window.alert("不能创建");
}
gg.onreadystatechange=processRequest;
gg.open("POST",url,true);
gg.send(null);
}
function processRequest(){
if(gg.readyState == 4){
if(gg.status == 200){
document.getElementById("label1").value=gg.responseText;
}
}
}
function update(){
var user = form1.user.value;
if(user==""){
form1.user.focus();
}
else{
var url = "jsp.jsp?user="+user;
url = encodeURI(url);
url = encodeURI(url);
send_request(url);
}
form1.user.value="";
form1.user.focus();
}
function chat(){
var user =1;
var url = "jsp.jsp?user=1";
send_request(url);
setInterval("chat()",2000);
}
window.onload=chat();