var panels = new Array('panel1', 'panel3');
      var selectedTab = null; 
      function showPanel(tab, name)
      {
        if (selectedTab) 
        {
          selectedTab.style.background = 'transparent url(/Images/Layout/Search/tab_off.png) no-repeat';
          selectedTab.style.paddingTop = '0px';
          selectedTab.style.marginTop = '0px';
          selectedTab.style.color = '';
        }
        selectedTab = tab;
        selectedTab.style.background = 'transparent url(/Images/Layout/Search/tab_on.png) no-repeat';
        selectedTab.style.paddingTop = '0px';
        selectedTab.style.marginTop = '0px';
        selectedTab.style.color = 'black';        
        for(i = 0; i < panels.length; i++)
        {
          document.getElementById(panels[i]).style.display = (name == panels[i]) ? 'block':'none';
        }
        return false;
      }