var tID = 0;
function ShowTabs(ID) {
    if (ID != tID) {
        eval("document.getElementById('TabTitle" + [tID] + "').className='menu_title1';");
        eval("document.getElementById('TabTitle" + [ID] + "').className='menu_title2';");
        eval("document.getElementById('Tabs" + [tID] + "').style.display='none';");
        eval("document.getElementById('Tabs" + [ID] + "').style.display='';");
        tID = ID;
    }
}