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

if (browser)

{

Img1off = new Image(80, 37);
Img1off.src = "images/structure/tb_who1.gif";
Img1on = new Image(80, 37);
Img1on.src = "images/structure/tb_who2.gif";

Img2off = new Image(85, 37);
Img2off.src = "images/structure/tb_wha1.gif";
Img2on = new Image(85, 37);
Img2on.src = "images/structure/tb_wha2.gif";

Img3off = new Image(111, 37);
Img3off.src = "images/structure/tb_don1.gif";
Img3on = new Image(111, 37);
Img3on.src = "images/structure/tb_don2.gif";

Img4off = new Image(179, 37);
Img4off.src = "images/structure/tb_how1.gif";
Img4on = new Image(179, 37);
Img4on.src = "images/structure/tb_how2.gif";

Img5off = new Image(57, 59);
Img5off.src = "images/structure/centre_button1.jpg";
Img5on = new Image(57, 59);
Img5on.src = "images/structure/centre_button2.jpg";

Img6off = new Image(67, 108);
Img6off.src = "images/home/hp_who1.gif";
Img6on = new Image(67, 108);
Img6on.src = "images/home/hp_who2.gif";

Img7off = new Image(69, 108);
Img7off.src = "images/home/hp_what1.gif";
Img7on = new Image(69, 108);
Img7on.src = "images/home/hp_what2.gif";

Img8off = new Image(64, 108);
Img8off.src = "images/home/hp_done1.gif";
Img8on = new Image(64, 108);
Img8on.src = "images/home/hp_done2.gif";

Img9off = new Image(85, 108);
Img9off.src = "images/home/hp_how1.gif";
Img9on = new Image(85, 108);
Img9on.src = "images/home/hp_how2.gif";

}

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