// JavaScript Document
function chkid(email)
{ 
	email=trimString(email);
	if(email=="")
		return;
	
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
	alert ("Browser does not support HTTP Request")
	return
	} 
	var url="check_email.php"
	url=url+"?q="+email
	url=url+"&sid="+Math.random()
	xmlHttp.onreadystatechange=chkvalid
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
}


function chkvalid() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		document.getElementById("chkmail").innerHTML=xmlHttp.responseText
		if (xmlHttp.responseText!="")
		{
			document.form3.email.value=""
			document.form3.email.focus()
		}
	} 
}

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