update progress for ASP:Button
<p>I want to use show a "Loading Image" on the click of server side button, that should be unloaded after the button event completes.</p>

<p><a href="http://ajax.net-tutorials.com/controls/updateprogress-control/" rel="nofollow">http://ajax.net-tutorials.com/controls/updateprogress-control/</a>
have to use Javascript in this.</p>
