//var panels = new Array('packageA', 'packageB', 'packageC', 'packageD', 'packageE', 'packageF', 'packageG');
  var panels = new Array('packageA', 'packageB', 'packageC', 'packageD');
  var selectedTab = null;
  function showPanel(tab, name)
  {
    if (selectedTab) 
    {
   	  selectedTab.style.backgroundImage="url(/images/spacer.gif)";
    selectedTab.style.backgroundColor="";
    }
    selectedTab = tab;
    selectedTab.style.backgroundImage="url(/images/imgtab.gif)";
    selectedTab.style.backgroundColor="";

    for(i = 0; i < panels.length; i++)
      document.getElementById(panels[i]).style.display = (name == panels[i]) ? 'block':'none';

    return false;
  }