// JavaScript Document
var   xmlHttp   =   null; 

function   CheckMail() 
{
try 
{
xmlHttp   =   new   ActiveXObject("Msxml2.XMLHTTP"); 
} 
catch(err1) 
 { 
 try 
{ 
 xmlHttp   =   new   ActiveXObject("Microsoft.XMLHTTP"); 
 } 
 catch(err2) 
 { 
 xmlHttp   =   new   XMLHttpRequest(); 
} 
} 
 
  var   uname= document.getElementById("txtEmail");
  //var   upwd= document.getElementById("upwd");
  var   url   = "../sys_checkuser.aspx?st=LOGIN&umail=" + uname.value; 
  xmlHttp.open("GET",url,true); 
  xmlHttp.onreadystatechange   =   OnHandler; 
  xmlHttp.send(null); 
} 
 function   OnHandler() 
{ 
 if(xmlHttp.readyState   ==   4) 
 { 
var   isValid   =   xmlHttp.responseText; 
var   exists   =   document.getElementById("ErrorUmailReg"); 

if (isValid=="REGED"){
exists.innerHTML   = "<font color='#CC3300' style='background-image:url(images/icon.gif);background-repeat:no-repeat;padding:0 0 0 20;'>This email address has been registered,Please use another one.</font>"
//document.getElementById("txtEmail").focus();
document.getElementById("btn_submit_reg").disabled=true;
}

if (isValid=="NOREG"){
exists.innerHTML   = "<font color='#CC3300'></font>"
document.getElementById("btn_submit_reg").disabled=false;
}

 if (isValid.length!==0){
 return false;
 }
 }
  
 }