// Navigation rollovers

if (document.images) {
// Four bottom buttons
img1on = new Image();   img1on.src = "/navpics/navfour-01-On.gif";
img1off = new Image();  img1off.src = "/navpics/navfour-01-Off.gif";
img2on = new Image();   img2on.src = "/navpics/navfour-02-On.gif";
img2off = new Image();  img2off.src = "/navpics/navfour-02-Off.gif";
img3on = new Image();   img3on.src = "/navpics/navfour-03-On.gif";
img3off = new Image();  img3off.src = "/navpics/navfour-03-Off.gif";
img4on = new Image();   img4on.src = "/navpics/navfour-04-On.gif";
img4off = new Image();  img4off.src = "/navpics/navfour-04-Off.gif";
// Top nav buttons
img5on = new Image();   img5on.src = "/navpics/navtop_01_On.gif";
img5off = new Image();  img5off.src = "/navpics/navtop_01_Off.gif";
img6on = new Image();   img6on.src = "/navpics/navtop_02_On.gif";
img6off = new Image();  img6off.src = "/navpics/navtop_02_Off.gif";
img7on = new Image();   img7on.src = "/navpics/navtop_03_On.gif";
img7off = new Image();  img7off.src = "/navpics/navtop_03_Off.gif";
img8on = new Image();   img8on.src = "/navpics/navtop_04_On.gif";
img8off = new Image();  img8off.src = "/navpics/navtop_04_Off.gif";
img9on = new Image();   img9on.src = "/navpics/navtop_05_On.gif";
img9off = new Image();  img9off.src = "/navpics/navtop_05_Off.gif";
// Discipline buttons
img10on = new Image();   img10on.src = "/navpics/nav-disc-01-On.gif";
img10off = new Image();  img10off.src = "/navpics/nav-disc-01-Off.gif";
img11on = new Image();   img11on.src = "/navpics/nav-disc-02-On.gif";
img11off = new Image();  img11off.src = "/navpics/nav-disc-02-Off.gif";
img12on = new Image();   img12on.src = "/navpics/nav-disc-03-On.gif";
img12off = new Image();  img12off.src = "/navpics/nav-disc-03-Off.gif";
img13on = new Image();   img13on.src = "/navpics/nav-disc-04-On.gif";
img13off = new Image();  img13off.src = "/navpics/nav-disc-04-Off.gif";
img14on = new Image();   img14on.src = "/navpics/nav-disc-05-On.gif";
img14off = new Image();  img14off.src = "/navpics/nav-disc-05-Off.gif";
// Us buttons
img15on = new Image();   img15on.src = "/navpics/nav-us-01-On.gif";
img15off = new Image();  img15off.src = "/navpics/nav-us-01-Off.gif";
img16on = new Image();   img16on.src = "/navpics/nav-us-02-On.gif";
img16off = new Image();  img16off.src = "/navpics/nav-us-02-Off.gif";
img17on = new Image();   img17on.src = "/navpics/nav-us-03-On.gif";
img17off = new Image();  img17off.src = "/navpics/nav-us-03-Off.gif";
img18on = new Image();   img18on.src = "/navpics/nav-us-04-On.gif";
img18off = new Image();  img18off.src = "/navpics/nav-us-04-Off.gif";
img19on = new Image();   img19on.src = "/navpics/nav-us-05-On.gif";
img19off = new Image();  img19off.src = "/navpics/nav-us-05-Off.gif";
img20on = new Image();   img20on.src = "/navpics/nav-us-06-On.gif";
img20off = new Image();  img20off.src = "/navpics/nav-us-06-Off.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");}
}