if (document.images) {
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    HomeOff.src = "Images/Home_off.jpg";
    HomeOn = new Image();
    HomeOn.src = "Images/Home_on.jpg";

    LaChapterOff = new Image();
    LaChapterOff.src = "Images/LaChapter_off.jpg";
    LaChapterOn = new Image();
    LaChapterOn.src = "Images/LaChapter_on.jpg";

    KnowingDDMOff = new Image();
    KnowingDDMOff.src = "Images/KnowingDDM_off.jpg";
    KnowingDDMOn = new Image();
    KnowingDDMOn.src = "Images/KnowingDDM_on.jpg";

    ShengYengSuFuOff = new Image();
    ShengYengSuFuOff.src = "Images/ShengYengSuFu_off.jpg";
    ShengYengSuFuOn = new Image();
    ShengYengSuFuOn.src = "Images/ShengYengSuFu_on.jpg";

    LaEventsOff = new Image();
    LaEventsOff.src = "Images/LaEvents_off.jpg";
    LaEventsOn = new Image();
    LaEventsOn.src = "Images/LaEvents_on.jpg";

    DDMPublishOff = new Image();
    DDMPublishOff.src = "Images/DDMPublish_off.jpg";
    DDMPublishOn = new Image();
    DDMPublishOn.src = "Images/DDMPublish_on.jpg";

    DDMWebsOff = new Image();
    DDMWebsOff.src = "Images/DDMWebs_off.jpg";
    DDMWebsOn = new Image();
    DDMWebsOn.src = "Images/DDMWebs_on.jpg";

    JoinLaOff = new Image();
    JoinLaOff.src = "Images/JoinLa_off.jpg";
    JoinLaOn = new Image();
    JoinLaOn.src = "Images/JoinLa_on.jpg";
}

function buttondown(buttonname) {
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        document[buttonname].src = eval(buttonname + "On.src");
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}

function buttonup(buttonname) {
    if (document.images) {
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}