var panels = new Array('panel1', 'panel2', 'panel3');
      var selectedTab = null;
      function showPanel(tab, name)
      {
        if (selectedTab) 
        {
          selectedTab.style.backgroundColor = '';
          selectedTab.style.color = '';
          selectedTab.style.paddingTop = '';
          selectedTab.style.marginTop = '';
        }
        selectedTab = tab;
        selectedTab.style.backgroundColor = 'white';
        selectedTab.style.color = '#990000';
        selectedTab.style.paddingTop = '';
        selectedTab.style.marginTop = '';
		
        for(i = 0; i < panels.length; i++)
          document.getElementById(panels[i]).style.display = (name == panels[i]) ? 'block':'none';

        return false;
}