title: Gray out parent window when child window is up
body: <p>I'm looking for a way to do this:</p>
  
  <ol>
  <li>Javascript function that opens a pop-up window that displays a list view of my employees</li>
  <li>When pop-up window opens grey-out parent/opener window</li>
  <li>When pop-up window is closed, parent window "veil" is removed.</li>
  </ol>
  
  <p>Thanks for any code or ideas.</p>