var preloadFlag = false;
var current = 0;
var count = 0;
var steps = ["images/step1.gif","images/step2.gif","images/step3.gif","images/step4.gif","images/step5.gif","images/step6.gif","images/step7.gif", "images/step5_hint.gif", "images/step6_hint.gif"];
function preloadImages() {
	if (document.images && slides != null) {
		for (var i = 0; i < slides.length; i ++) {
			img1 = newImage(slides[i][1]);
		}
		for (var j = 0; j < steps.length ; j ++ ) {
			img1 = newImage(steps[j]);
		}
		preloadFlag = true;
		count = slides.length - 1;
	}
}
function newImage(arg) {
	if (document.images) {
		var rslt = new Image();
		rslt.src = arg;
		return rslt;
	}					
}
function openWindow(url, name, features) {
	window.open(url, name, features);
}
function processNext() {
	gotoSlide(current + 1);
}
function processPrevious() {
	gotoSlide(current - 1);
}
function gotoSlide(i) {
	if (document.images && slides != null && i >= 0 && i <= count) {
		current = i;
		var slide = slides[current];
		document.slide.src = slide[0];
		document.getElementById("instructions").innerHTML = slide[1];
		document.step.src = steps[current];
		if (current < count) {
			document.getElementById("next_link").style.visibility = "visible";
		}
		if (current > 0) {
			document.getElementById("previous_link").style.visibility = "visible";
		}
		if (current == 0) {
			document.getElementById("previous_link").style.visibility = "hidden";
		}
		if (current >= count) {
			document.getElementById("next_link").style.visibility = "hidden";
		}
	}
}
				function loadPage() {
					if (document.images && products != null) {
						for (var i = 0; i < products.length; i ++) {
							img1 = newImage("images/" + products[i] + ".gif");
						}
						preloadFlag = true;
						setTimeout("changeImage()", 5000);
					}
				}
				function changeImage() {
					index++;
					var image = document.getElementById("current_image");
					image.src = "images/" + products[index%imageFiles.length] + ".gif";
					image.alt = products[index%imageFiles.length];	
					document.getElementById("product_link").href = "products.html#" + products[index%imageFiles.length];
					window.setTimeout("changeImage()", 5000);
				}