var DivId;
var status = true;
var time = 0;
var DepIDbefore = 0;
var TabIDbefore = 1;
var FirstGo = true;

function XmlHttp( ){
    this.CreateXmlHttpObject = CreateXmlHttpObject;
    this.GetUrlContent              = GetUrlContent;
    this.GetResponseText          = GetResponseText;
    this.GetReadyState              = GetReadyState;           
    this.HttpMethod = 'GET'; // default
    this.objXmlHttp = this.CreateXmlHttpObject();
}

function CreateXmlHttpObject(){
    var xmlhttp=false;
    try {
        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
    try {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
    } catch (E) {
        xmlhttp = false;
    }
}


if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
    xmlhttp = new XMLHttpRequest();
}
    return xmlhttp;
}
var objXMLHttp =  new XmlHttp();
       
function GetReadyState( ){
	return this.objXmlHttp.readyState;
}

function GetResponseText( ){
    return this.objXmlHttp.responseText;
}

function GetResponse(){
	if (objXMLHttp!=null && objXMLHttp.GetReadyState()==4 && tmpDivId != null) {
	var objMyDiv = document.getElementById( tmpDivId );
		//objMyDiv.innerHTML = '<a style="font-size:12px;padding-top:15px;">Please wait...'+DivId+'</a>';
		if (objXMLHttp.GetResponseText( )!=''){
        objMyDiv.innerHTML = objXMLHttp.GetResponseText( );
		}
    }
}			

function GetUrlContent( strUrl, toSend ,objOnReadyStateChangeFunction ){
	this.objXmlHttp.open(this.HttpMethod, strUrl, true);
    this.objXmlHttp.setRequestHeader('Content-Type', 'text/xml; charset=UTF-8');
    if(objOnReadyStateChangeFunction){
		this.objXmlHttp.onreadystatechange=function(){
            objOnReadyStateChangeFunction();
        }
    }
    this.objXmlHttp.send(toSend);
	status = true;
}

var tmpDivId = null;
function UpdateDiv( DivId, Page ){
    if (FirstGo==false && objXMLHttp.GetReadyState()!=4){
        UpdateDivByTimeOut(DivId, Page);
    }else{
        FirstGo = false;
        status = false;
        tmpDivId = DivId;
	    if( Page !='' ){
		    var objMyDiv = document.getElementById( DivId );
            objMyDiv.innerHTML = '<a style="font-size:11px;">Please wait...</a>';
    		
            objXMLHttp.GetUrlContent( Page, null ,GetResponse);
		    //objXMLHttp.GetUrlContent( Page, null);
        }
    }
    return true;
}			

function UpdateDivByTimeOut(a, b){
    if (FirstGo == true){
        UpdateDiv(a, b);
    } else {
	    if(objXMLHttp.GetReadyState()!=4 && time<2001){
	        time++;				
		    if (time==2001){ alert("server is not answering, please try later");}
		    setTimeout('UpdateDivByTimeOut("'+a+'", "'+b+'")', 100);
	    }
	    if(objXMLHttp.GetReadyState()==4 && time<2001){
		    UpdateDiv(a, b);
	    }
    }
}