title: ASP.NET make image visible on Button Click
body: <p>I have a simple ASP.NET page with an image control and a button control.  When someone clicks the button, I want the image to be shown, then the button can continue processing whatever it has to do, at the end of it's process it will hide the image again.</p>
  
  <p>Is this possible?  I've seen conflicting answers.  I've tried using just the base code behind functionality and registering javascript functions on the fly (the javascript functions execute AFTER the button has completed all of its work, not before).</p>
  
  <p>Thanks - Greg.</p>