compat = false;
if( parseInt( navigator.appVersion ) >= 3 ) { compat = true; }
if( compat ){

// Active images
img1on = new Image();
img1on.src = "../nav/nav1a.gif";
img2on = new Image();
img2on.src = "../nav/nav2a.gif";
img3on = new Image();
img3on.src = "../nav/nav3a.gif";
img4on = new Image();
img4on.src = "../nav/nav4a.gif";
img5on = new Image();
img5on.src = "../nav/nav5a.gif";
img6on = new Image();
img6on.src = "../nav/nav6a.gif";
img7on = new Image();
img7on.src = "../nav/nav7a.gif";
img8on = new Image();
img8on.src = "../nav/nav8a.gif";
img9on = new Image();
img9on.src = "../nav/nav9a.gif";
img10on = new Image();
img10on.src = "../nav/nav10a.gif";
img11on = new Image();
img11on.src = "../nav/nav11a.gif";
img12on = new Image();
img12on.src = "../nav/nav12a.gif";
img13on = new Image();
img13on.src = "../nav/nav13a.gif";
img14on = new Image();
img14on.src = "../nav/nav14a.gif";
img15on = new Image();
img15on.src = "../nav/nav15a.gif";

// Inactive images
img1off = new Image();
img1off.src = "../nav/nav1.gif";
img2off = new Image();
img2off.src = "../nav/nav2.gif";
img3off = new Image();
img3off.src = "../nav/nav3.gif";
img4off = new Image();
img4off.src = "../nav/nav4.gif";
img5off = new Image();
img5off.src = "../nav/nav5.gif";
img6off = new Image();
img6off.src = "../nav/nav6.gif";
img7off = new Image();
img7off.src = "../nav/nav7.gif";
img8off = new Image();
img8off.src = "../nav/nav8.gif";
img9off = new Image();
img9off.src = "../nav/nav9.gif";
img10off = new Image();
img10off.src = "../nav/nav10.gif";
img11off = new Image();
img11off.src = "../nav/nav11.gif";
img12off = new Image();
img12off.src = "../nav/nav12.gif";
img13off = new Image();
img13off.src = "../nav/nav13.gif";
img14off = new Image();
img14off.src = "../nav/nav14.gif";
img15off = new Image();
img15off.src = "../nav/nav15.gif";

}
function imgOn(imgName) {
   if (document.images) {
       document[imgName].src = eval(imgName + "on.src");
        }
}
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}