// JavaScript Document

var xmlHttp

function showHint(str)
{
	if (str.length==0)
	{
		document.getElementById("availHint").innerHTML=""
		return
	}
	xmlHttp=getHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	}
	var url="gethint.php"
	url=url+"?q="+str
	xmlHttp.onreadystatechange=stateChanged
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
}

function setField(str)
{
	document.getElementById("login_name").value=str
}

function stateChanged()
{
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{
		document.getElementById("availHint").innerHTML=xmlHttp.responseText
	}
}
function getHttpObject()
{
	var xmlHttp=null;
	try
	{
		//Standard compliant browsers
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		//IE
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}