// JavaScript Document
var xmlHttp;
function check_user(user)
{ 
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
	alert ("Browser does not support HTTP Request")
	return
	} 
	var url="check_user.php"
	url=url+"?q="+user
	url=url+"&sid="+Math.random()
	xmlHttp.onreadystatechange=user_valid
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
}
function user_valid() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		document.getElementById("user_msg").innerHTML=xmlHttp.responseText
	} 
}
////////////////////////////////

var xmlHttp_email;
function check_email(email)
{ 	

	xmlHttp_email=GetXmlHttpObject()
	if (xmlHttp_email==null)
	{
	alert ("Browser does not support HTTP Request")
	return
	} 
	var url="check_email.php"
	url=url+"?q="+email
	url=url+"&sid="+Math.random()
	xmlHttp_email.onreadystatechange=email_valid
	xmlHttp_email.open("GET",url,true)
	xmlHttp_email.send(null)
	
}
function email_valid()
{ 
	if (xmlHttp_email.readyState==4 || xmlHttp_email.readyState=="complete")
	{ 
		document.getElementById("email_msg").innerHTML=xmlHttp_email.responseText
	} 
}
////////////////////////////////

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