TweakTabBars();

function TweakTabBars()
{
   var tb_main = document.getElementById('tab_bar_main');
   var tb_sub = document.getElementById('tab_bar_sub');

   // Hide our Sub-items if there's only one of them.
   if (tb_sub)
   {
      // Sub-tabs are A tags
      var tabs = tb_sub.getElementsByTagName('A');

      if (tabs.length==1)
      {
         tabs[0].style.display = 'none';
      }
   }

   // Change our first tab Curve if our first tab is current!
   if (tb_main)
   {
      // Parent-tabs are TD tags. First TD is our extra curve though
      var tabs = tb_main.getElementsByTagName('TD');
      if (tabs.length>1 && tabs[1].className=='tab_current')
      {
         tabs[0].style.backgroundImage='url(/images/directory/tab_curve_current.gif)';
      }

   }
}