// JavaScript Document
NewImg = new Array (
"small/1860-a.jpg",
"small/1860-b.jpg",
"small/1870.jpg",
"small/1880.jpg",
"small/1885.jpg",
"small/1889.jpg",
"small/1895.jpg",
"small/1906.jpg",
"small/1907.jpg",
"small/1914.jpg",
"small/1920.jpg",
"small/1922.jpg",
"small/1931.jpg",
"small/1946.jpg",
"small/1950.jpg",
"small/1965.jpg",
"small/1969.jpg",
"small/1992.jpg"
);
var ImgNum = 0;
var ImgLength = NewImg.length - 1;

//Time delay between Slides in milliseconds
var delay = 3000;

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);
   }
}
//  End -->