var xmlHttp
var posvalue 
var value
//	id = idval, value = val, span or div id name = posval, distination file name = fname
function userchecking(idval,val,posval,fname)
{
	posvalue = posval;
	value = val;
if(val.length==0)
{ 
document.getElementById(posvalue).innerHTML=""
return
}
xmlHttp=GetXmlHttpObjectadd()
if (xmlHttp==null)
{
alert ("Browser does not support HTTP Request")
return
} 
 
var url=fname
url=url+"&"+idval+"="+val
xmlHttp.onreadystatechange=stateChangedadd  
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
} 

function stateChangedadd() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		if(posvalue != "invitefriend")
			document.getElementById(posvalue).innerHTML=xmlHttp.responseText;
		else
			alert(xmlHttp.responseText);
	} 
} 

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