// JavaScript Document

var xmlHttp

function checkavail(uname)
{ 
if (uname != "")
	{
		var url="radicals/checkUsername.asp?uname="+uname
		xmlHttp=GetXmlHttpObject(stateChanged)
		xmlHttp.open("GET", url , true)
		xmlHttp.send(null)
	}
else
	{
		document.getElementById("availUname").innerHTML = ""
	}
} 

function stateChanged() 
{ 
if (xmlHttp.readyState==1)
{
	document.getElementById("availUname").innerHTML="<img src='images/indicator_flower.gif' width='16' height='16'>"
}
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ 
	document.getElementById("availUname").innerHTML=xmlHttp.responseText 
} 
} 

function GetXmlHttpObject(handler)
{ 
var objXmlHttp=null

if (navigator.userAgent.indexOf("Opera")>=0)
{
alertG("This Search doesn't work in Opera") 
return 
}
if (navigator.userAgent.indexOf("MSIE")>=0)
{ 
var strName="Msxml2.XMLHTTP"
if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
{
strName="Microsoft.XMLHTTP"
} 
try
{ 
objXmlHttp=new ActiveXObject(strName)
objXmlHttp.onreadystatechange=handler 
return objXmlHttp
} 
catch(e)
{ 
alertG("Error. Scripting for ActiveX might be disabled") 
return 
} 
} 
if (navigator.userAgent.indexOf("Mozilla")>=0)
{
objXmlHttp=new XMLHttpRequest()
objXmlHttp.onload=handler
objXmlHttp.onerror=handler 
return objXmlHttp
}
}