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) {
		BF_over = newImage("images/9000BFfront.jpg");
		BF_over2 = newImage("images/9000ECTsample.jpg");
		BF_over3 = newImage("images/9000-front.jpg");
		BF_over4 = newImage("images/9000SCfront.jpg");
		BF_over5 = newImage("images/1500.jpg");
		BF_over6 = newImage("images/1000Sample.jpg");
		BF_over7 = newImage("images/1400.jpg");
		BF_over8 = newImage("images/1500SW.jpg");
		BF_over9 = newImage("images/1000MZfront.jpg");
		BF_over10 = newImage("images/1000TZfront.jpg");
		BF_over11= newImage("images/louver_front.jpg");
		BF_over12= newImage("images/white.gif");
		BF_over13 = newImage("images/7000wt-roF.jpg");
		preloadFlag = true;
	}
}