var xmlHttp=null;
function GetXmlHttpObject()
{
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
	// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}
function stateChanged() 
{ 
	if (xmlHttp.readyState==4)
	{ 
		var resp = xmlHttp.responseText;
		document.getElementById("showValue").innerHTML = resp;
	}
}
var delay = 3000;
function StartTheTimer()
{
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	} 
	var url="getWeatherData3.php";
	url=url+"?sid="+Math.random();
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
    timerID = self.setTimeout("StartTheTimer()", delay)
}
StartTheTimer();