var xmlHttp
//************************************ Interface Function *******************************************//
function AjaxHandler(url,handler)
{
	xmlHttp=GetXmlHttpObject(handler)
    xmlHttp.open("GET",url,true)
    xmlHttp.send(null)
}
//************************************Creating Ajax Object*******************************************//
function GetXmlHttpObject(handler)
{ 
	var objXmlHttp=null

	if (navigator.userAgent.indexOf("MSIE")>=0)
	{ 
		var strName="Msxml2.XMLHTTP"
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
		{
		 strName="Microsoft.XMLHTTP"
		} 		
			objXmlHttp=new ActiveXObject(strName)
			objXmlHttp.onreadystatechange=handler 
			return objXmlHttp			
	} 
	
	if (navigator.userAgent.indexOf("Mozilla")>=0)
	{
		objXmlHttp=new XMLHttpRequest()
		objXmlHttp.onload=handler
		objXmlHttp.onerror=handler 
		return objXmlHttp
	}
}