title: Linking multiple ListBoxes to only allow single select
body: <p>I have three ListBoxes each representing a single field database table. They are presented side by side on the ASP.NET page. Is there any way to group them so that only a single item from any of the boxes can be selected at a time?</p>
  
  <p><strong>edit</strong> - ie, if item 3 in box 1 is selected, selecting any item in box 2 must unselect it</p>