function changeurl(url){
	if(url==""){ 
		document.getElementById("autochange").innerHTML="";
		return;
	}
	url="/home/myframe.php?link="+url;
	xmlHttp=GetXmlHttpObject();
	if(xmlHttp==false){
		return;
	}
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}
function GetXmlHttpObject(){
	var xmlHttp=false;
	try{
		xmlHttp=new XMLHttpRequest();
	}
	catch(e1){
		try{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e2){
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}
function stateChanged(){ 
	if(xmlHttp.readyState==4){ 
		document.getElementById("autochange").innerHTML=xmlHttp.responseText;
	}
}
var limit="0:30";
if(document.images){
	var parselimit=limit.split(":");
	parselimit=parselimit[0]*60+parselimit[1]*1;
}
function beginrefresh(){
	if(!document.images)
	return;
	if(parselimit==1){
		getnewpage();
		parselimit=30;
		setTimeout("beginrefresh()",0);
	}
	else{ 
		parselimit-=1;
		setTimeout("beginrefresh()",1000);
	}
}
var howMany = 1;
var page = new Array(howMany+1);
page[0] = "http://www.caccongtyvietnam.vn/build-data.php";
function rndnumber(){
	var randscript = -1;
	while (randscript < 0 || randscript > howMany || isNaN(randscript)){
		randscript = parseInt(Math.random()*(howMany+1));
	}
	return randscript;
}
function getnewpage(){
	quo = rndnumber();
	quox = page[quo];
	changeurl(quox);
}