NewImg = new Array (
"http://www.angelfire.com/geek/forustoshowoff/images/ymca.jpg",
"http://www.angelfire.com/geek/forustoshowoff/images/catch.jpg",
"http://www.angelfire.com/geek/forustoshowoff/images/bigfoot.jpg",
"http://www.angelfire.com/geek/forustoshowoff/images/poke.jpg",
"http://www.angelfire.com/geek/forustoshowoff/images/apark.jpg",
"http://www.angelfire.com/geek/forustoshowoff/images/turtle.jpg"
);
var ImgNum = 0;
var ImgLength = NewImg.length - 1;

var delay = 5000;

var lock = false;
var run;
function chgImg(direction) {
if (document.images) {
ImgNum = ImgNum + direction;
if (ImgNum > ImgLength) {
ImgNum = 0;
}
if (ImgNum < 0) {
ImgNum = ImgLength;
}
document.slideshow.src = NewImg[ImgNum];
   }
}
function auto() {
if (lock == true) {
lock = false;
window.clearInterval(run);
}
else if (lock == false) {
lock = true;
run = setInterval("chgImg(1)", delay);
   }
}