var panels = new Array('panel1', 'panel2', 'panel3');
      var selectedTab = null;
      function showPanel(tab, name)
      {
        if (tab)
        {
	        if (selectedTab) 
	        {
	          selectedTab.style.backgroundColor = '';
	          selectedTab.style.paddingTop = '';
	          selectedTab.style.paddingBottom = '';
	        }
	        selectedTab = tab;
	        selectedTab.style.backgroundColor = 'white';
	        selectedTab.style.paddingTop = '6px';
	        selectedTab.style.marginTop = '0px';
			selectedTab.style.borderBottom = '0px';
	        for(i = 0; i < panels.length; i++)
	        {
	          document.getElementById(panels[i]).style.display = (name == panels[i]) ? 'block':'none';
	        }
	    }
        return false;
      }