<!--

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) {
		About_Services_over = newImage("images/About-Services_over.gif");
		About_over = newImage("images/About-over.gif");
		Services_About_over = newImage("images/Services-About_over.gif");
		Services_over = newImage("images/Services-over.gif");
		Nitrogen_About_over = newImage("images/Nitrogen-About_over.gif");
		Nitrogen_over = newImage("images/Nitrogen-over.gif");
		Safety_About_over = newImage("images/Safety-About_over.gif");
		Safety_over = newImage("images/Safety-over.gif");
		Discount_About_over = newImage("images/Discount-About_over.gif");
		Discount_over = newImage("images/Discount-over.gif");
                Contacts_over = newImage("images/Contacts-over.gif");
		Contacts_About_over = newImage("images/Contacts-About_over.gif");
		preloadFlag = true;
	}
}

// -->