browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))

if (browser)

{
Img1off = new Image(140, 31);
Img1off.src = "./images/sub/tb_about_01.gif";
Img1on = new Image(140, 31);
Img1on.src = "./images/sub/tb_about_02.gif";

Img2off = new Image(140, 30);
Img2off.src = "./images/sub/tb_columns_01.gif";
Img2on = new Image(140, 30);
Img2on.src = "./images/sub/tb_columns_02.gif";

Img3off = new Image(140, 30);
Img3off.src = "./images/sub/tb_history_01.gif";
Img3on = new Image(140, 30);
Img3on.src = "./images/sub/tb_history_02.gif";

Img4off = new Image(140, 31);
Img4off.src = "./images/sub/tb_resume_01.gif";
Img4on = new Image(140, 31);
Img4on.src = "./images/sub/tb_resume_02.gif";

Img5off = new Image(140, 30);
Img5off.src = "./images/sub/tb_teacher_01.gif";
Img5on = new Image(140, 30);
Img5on.src = "./images/sub/tb_teacher_02.gif";

Img6off = new Image(140, 30);
Img6off.src = "./images/sub/tb_contact_01.gif";
Img6on = new Image(140, 30);
Img6on.src = "./images/sub/tb_contact_02.gif";

Img7off = new Image(143, 31);
Img7off.src = "./images/sub/tb_car_01.gif";
Img7on = new Image(143, 31);
Img7on.src = "./images/sub/tb_car_02.gif";
}

function loadimage(imageName, imgObjName)
{
    if (browser) 
    {
        document.images[imageName].src = eval(imgObjName + ".src");
        return true;
    }
}