var selectedTab = null;
function showPanel(oTab, sPanelID)
{
    if (selectedTab) 
    {
        selectedTab.className = '';
    }
    selectedTab = oTab;
    selectedTab.className = tabclassclicked;
    
    for(i = 0; i < panels.length; i++)
    {
        FindControl(panels[i]).style.display = (sPanelID == panels[i]) ? 'block':'none';
    }
    return false;
}
function initTab(sTabID, sPanelID) 
{
    selectedTab = FindControl(sTabID);
    selectedTab.className = tabclassclicked;
    FindControl(sPanelID).style.display = 'block';
}