if (document.images) {
img1 = new Image();
img1.src = "images/link1a.gif";
img2 = new Image();
img2.src = "images/link2a.gif";
img3 = new Image();
img3.src = "images/link3a.gif";
img4 = new Image();
img4.src = "images/link4a.gif";
}

function linkOn(num)
{
document.images['link' + (num)].src = "images/link"+(num)+"a.gif"
}

function linkOff(num)
{
document.images['link' + (num)].src = "images/link"+(num)+".gif"
}

var i = Math.ceil(Math.random() * 14);

function switchPix() {
i++
if (i > 14)
{
i = 1
}
document.images.slideshow.src="images/slideshow" + (i) + ".jpg"
timer=setTimeout ('switchPix()',6000)
}