function sendFormData(url)
{
xmlHttp=GetXmlHttpObject()
		if (xmlHttp==null)
		{
		alert ("Browser does not support HTTP Request")
		return
		} 
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}


function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ 
if(resDiv) document.getElementById(resDiv).innerHTML=xmlHttp.responseText 
/*if(flagHideDiv == true) setTimeout(clearDiv, 3000) */
} 
} 

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

var xmlHttp;
var resDiv;
function checkEmpty(val,msg,divid)
{
var url="ajax.php?action=checkEmpty";
	resDiv = divid;
	url=url+"&val="+val+"&msg="+msg;
	sendFormData(url);
	return true;
}
function checkEmptyuser(val,msg,divid)
{
var url="ajax.php?action=checkEmptyuser";
	resDiv = divid;
	url=url+"&val="+val+"&msg="+msg;
	sendFormData(url);
	return true;
}
function checkEmail(val,msg,divid)
{
var url="ajax.php?action=checkEmail";
	resDiv = divid;
	url=url+"&val="+val+"&msg="+msg;
	sendFormData(url);
	return true;
}
function checkNum(val,msg,divid)
{
var url="ajax.php?action=checkNum";
	resDiv = divid;
	url=url+"&val="+val+"&msg="+msg;
	sendFormData(url);
	return true;
}
function checkLen(val,msg,divid)
{
var url="ajax.php?action=checkLen";
	resDiv = divid;
	url=url+"&val="+val+"&msg="+msg;
	sendFormData(url);
	return true;
}