Loading_Example.js

<style type='text/css'>
  #loading {
    background: #ffffff;
    position:absolute; width:100%; height:24;
        top:0; bottom:0; left:0; right:0; margin:auto;
        z-index: 999999999;
        }
</style>

<div id='loading'>
    <div id='loading-msg'>
        <span><table bgcolor=#ff0000><tr><td><font color=#ffffff>Loading…</fontable></span>
    </div>
</div>

:
:
your code here
:
:


<script>
 //put this code on end of your page     
window.onload=function() {
   var Layer_choice;
   Layer_choice = eval("document.getElementById('loading')");
   Layer_choice.style.display='none';
}
</script>