NewImg = new Array (
"renfest2002a.jpg","renfest2002b.jpg","renfest2002c.jpg","renfest2002d.jpg"
    );
    Caption = new Array (
"2002 - Brenda, Mairi, and Myah out shopping",
"2002 - Rilla",
"2002 - Doug on a walk-a-bout",
"2002 - Working at the information booth"
    );

var ImgNum = 0;
var ImgLength = NewImg.length - 1;
var ImgLen = NewImg.length

function chgImg(direction) {
if (document.images) {
ImgNum = ImgNum + direction;
if (ImgNum > ImgLength) {
ImgNum = 0;
}
if (ImgNum < 0) {
ImgNum = ImgLength;
}
ImgMark = ImgNum + 1;
document.slideshow.src = "http://www.clanntartan.org/gallery/renfestpics/"+NewImg[ImgNum];
if (document.getElementById) document.getElementById("CaptionBox").innerHTML= "("+ImgMark+" of "+ImgLen + ") " + Caption[ImgNum];
   }
}