little chat class

found this - haven't tested it but it looks like a nice start to make a simple chat.

function InitializeXMLHttpRequest(req){
 if (req != null) req.abort();
 if (typeof XMLHttpRequest != "undefined") req = new XMLHttpRequest();
 else{ try { req=new ActiveXObject("Msxml2.XMLHTTP");}
 catch(e) {
   try { req=new ActiveXObject("Microsoft.XMLHTTP"); }
   catch(oc){ req=null;}
   }
 }
 return req;
}

var reqChat = null;
reqChat = InitializeXMLHttpRequest(reqChat);
reqChat.onreadystatechange = ProcessCheckStatusResult;

function ProcessCheckStatusResult(){
status+='+';
    if (reqChat.readyState == 4){
        if (reqChat.status == 200){
            alert("ok");
        }
    }
}

function CheckStatus(){
reqChat = InitializeXMLHttpRequest(reqChat);
status+=' send';
   var url = "2.htm?t=" + new Date().getTime();
   reqChat.open('GET', url, true);
   reqChat.send(null);
}

status='';

setInterval(CheckStatus, 5000);