title: Gray out the webpage during Update progress Runs in ASP.NET
body: <p>i have a webpage where i had put an update progress control.I want that as the update progress starts, the entire Page will be gray out and as it completes the page will resume to original. 
  Below is the code i had added for Update Progress:- </p>
  
  <pre><code>&lt;div class="divTextAlign"&gt;
              &lt;asp:Updateprogress id="updProgress" runat="server" dynamiclayout="true" associatedupdatepanelid="updForgotPassword"&gt;
                  &lt;Progresstemplate&gt;
                      &lt;img src="App_Themes/Images/ajax-loader.gif" alt="" /&gt;
                  &lt;/Progresstemplate&gt;
          &lt;/asp:Updateprogress&gt; 
  </code></pre>
  
  <p>Please Let me know that how i gray out the page , If possible please provide the code also .
  Thanks in advance.</p>