// JavaScript Document
var xmlHttp
function showHint(str)
{
    xmlHttp=GetXmlHttpObject()
    if (xmlHttp==null)
    {
        alert ("Your Browser does not support HTTP Request")
        return;
    } 
    var url="isavail.php"
    url=url+"?un="+str
    xmlHttp.onreadystatechange=stateChanged 
    xmlHttp.open("GET",url,true)
    xmlHttp.send(null)
    return false;
} 

function stateChanged() 
{ 
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
    { 
	    if(xmlHttp.responseText=="0")
	    {
		    document.getElementById("avail").innerHTML = "This User ID is not available";
				
						
			 
					
			
		  //  document.getElementById("email").focus();
	    }
	    if(xmlHttp.responseText=="1")
	    {
		    document.getElementById("avail").innerHTML = "This User ID is available";
	    } 
    } 
} 

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