title: Loading screen in ASP.Net
body: <p>I'm building a few webpages in my webapplication which use a webservice.
  While communicating with the webservice, which can take more than a few seconds, I want to display a loading screen. Something like the jquery dialog, where the background is disabled and a loading image appears in the middel of the webpage.</p>
  
  <p>Is this possible and how can I do this?</p>