var XMLHttpRequestObject = false;

if (window.XMLHttpRequest) {
XMLHttpRequestObject = new XMLHttpRequest();
} else if (window.ActiveXObject) {
XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
}


function CheckX()
{


if(XMLHttpRequestObject) {
var mob =document.getElementById('RefMobNo').value;	
var obj = document.getElementById('refM');

var myRand = parseInt(Math.random()*999999999999999);

	if(mob=="")
  		obj.innerHTML="<font color='red'>please enter referal mobile no</font>";
	else if (mob !=""){  
   
   	 document.getElementById('btn').disabled =true ;
	
   
		var url="ajax/getref.php?mob=" + mob + "&vav="+ myRand;

		XMLHttpRequestObject.open("GET", url);

		XMLHttpRequestObject.onreadystatechange = function()
											{
	
				if (XMLHttpRequestObject.readyState == 4 &&
						XMLHttpRequestObject.status == 200) {
						obj.innerHTML = XMLHttpRequestObject.responseText;

															}
											}
				XMLHttpRequestObject.send(null);
}
document.getElementById('btn').disabled =false ;

} //if(XMLHttpRequestObject) {
} //end function checkx