pic1 = new Image(16, 16); 
pic1.src = "/en_img/loader.gif";

$(document).ready(function(){

$("#fb_button").click(function() { 
var usr = $("#lusername_fb").val();

if(usr.length >= 5)
{

$("#errmsg").html('<img align="absmiddle" src="/en_img/loader.gif" /> Checking availability...');

$.ajax({ 
type: "POST", 
url: "/checkuser.php", 
data: "username="+ usr, 
success: function(msg){ 
msg=msg.trim();
$("#statusfb").ajaxComplete(function(event, request, settings){ 

if(msg == 'OK')
{ 
//$("#lusername_fb").removeClass('object_error'); // if necessary
//$("#lusername_fb").addClass("object_ok");
//$(this).html(' <img align="absmiddle" src="/en_img/accepted.png" /> ');
document.forms["fb_popup"].submit();
} 
else 
{ 
$("#lusername_fb").removeClass('object_ok'); // if necessary
$("#lusername_fb").addClass("object_error");

$("#errmsg").html(msg);

}});}});
return false;
}
else
{
$("#errmsg").html('<span style="color: red;">User Name should have at least 5  characters.</span>');
$("#lusername_fb").removeClass('object_ok'); // if necessary
$("#lusername_fb").addClass("object_error");
}}

);});