// JavaScript Document
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) {
		pics_bn_design_over = newImage("pix/pics-bn_design_over.jpg");
		pics_bn_fabric_over = newImage("pix/pics-bn_fabric_over.jpg");
		pics_bn_erector_over = newImage("pix/pics-bn_erector_over.jpg");
		pics_bn_asme_over = newImage("pix/pics-bn_asme_over.jpg");
		pics_bn_vessels_over = newImage("pix/pics-bn_vessels_over.jpg");
		preloadFlag = true;
	}
}