function Change(nTd) 
{
    Toptd1.background = "";
    Toptd2.background = "";
    Toptd3.background = "";
    Toptd4.background = "";
    Toptd5.background = "";
    Toptd6.background = "";
    Toptd7.background = "";
    Toptd8.background = "";
    Toptd9.background = "";
    nTd.background = "style/img/top4.gif";
}
function TitleChange(obj) 
{
    ContentTable1.style.display = "none";
    ContentTable2.style.display = "none";
    ContentTable3.style.display = "none";
    ContentTable4.style.display = "none";
    ContentTable5.style.display = "none";
    obj.style.display = "block";
}