function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/home-over.jpg");
		about_us_over = newImage("images/about_us-over.jpg");
		products_over = newImage("images/products-over.jpg");
		services_over = newImage("images/services-over.jpg");
		gallery_over = newImage("images/gallery-over.jpg");
		links_over = newImage("images/links-over.jpg");
		contact_us_over = newImage("images/contact_us-over.jpg");
		preloadFlag = true;
	}
}

function showpic()
{
number = Math.floor(Math.random()*3)
if (number==0)
document.write('<img src="images/index_illust_01.jpg" border="0">')
if (number==1)
document.write('<img src="images/index_illust_02.jpg" border="0">')
if (number==2)
document.write('<img src="images/index_illust_03.jpg" border="0">')

}