function SelectTab(pfx, tabCount, index)
{
    //alert (tabCount + ", " + index);
    for (var i = 0; i < tabCount; i++)
    {
        var tab = document.getElementById(pfx + "_tab_" + i);
        var tabcontent = document.getElementById(pfx + "_tabcontent_" + i);
        
        tab.className = (i == index) ? "tabsel" : "tabunsel";
        tabcontent.className = (i == index) ? "tabsel" : "tabunsel";
    }
}