function GetXmlHttpObject()
{ 
	var objXMLHttp=null
	if (window.XMLHttpRequest)
	{
	objXMLHttp=new XMLHttpRequest()
	}
	else if (window.ActiveXObject)
	{
	objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
	return objXMLHttp
}

var xmlHttp_countDown;
var nextround;
function getCountDown(r){ 
	nextround=r;	
	xmlHttp_countDown=GetXmlHttpObject()
	if(xmlHttp_countDown==null){
		alert ("Browser does not support HTTP Request")
		return	
	}
	var url="";
	url="includes/getcountdown.php"
	url=url+"?rdate="+r
	url=url+"&randomd="+Math.random()
	xmlHttp_countDown.onreadystatechange=countDown_check
	xmlHttp_countDown.open("GET",url,true)
	xmlHttp_countDown.send(null)
}
function countDown_check(){
	if (xmlHttp_countDown.readyState==4 || xmlHttp_countDown.readyState=="complete")
	{ 
		document.getElementById("round_countdown").innerHTML=xmlHttp_countDown.responseText
		var t=setTimeout("getCountDown(nextround)",500);
	} 	
}