// ========================  menu bar  ========================


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.gif");
		advantage_over = newImage("images/advantage-over.gif");
		products_over = newImage("images/products-over.gif");
		warranty_over = newImage("images/warranty-over.gif");
		aboutus_over = newImage("images/aboutus-over.gif");
		preloadFlag = true;
	}
}

// ========================  products page  ========================

if(document.images) {
		interiorOn = new Image
		interiorOff = new Image
		exteriorOn = new Image
		exteriorOff = new Image
		screensOn = new Image
		screensOff = new Image
		rusticOn = new Image
		rusticOff = new Image
		bifoldsOn = new Image
		bifoldsOff = new Image
		componentsOn = new Image
		componentsOff = new Image
		
		interiorOn.src = "images/interior-over.jpg"
		interiorOff.src = "images/interior.jpg"
		exteriorOn.src = "images/exterior-over.jpg"
		exteriorOff.src = "images/exterior.jpg"
		screensOn.src = "images/screens-over.jpg"
		screensOff.src = "images/screens.jpg"
		rusticOn.src = "images/rustic-over.jpg"
		rusticOff.src = "images/rustic.jpg"
		bifoldsOn.src = "images/bi-folds-over.jpg"
		bifoldsOff.src = "images/bi-folds.jpg"
		componentsOn.src = "images/components-over.jpg"
		componentsOff.src = "images/components.jpg"
		
	} else {
		interiorOn = ""
		interiorOff = ""
		exteriorOn = ""
		exteriorOff = ""
		screensOn = ""
		screensOff = ""
		rusticOn = ""
		rusticOff = ""
		bifoldsOn = ""
		bifoldsOff = ""
		componentsOn = ""
		componentsOff = ""
		
		document.interior.src = ""
		document.exterior.src = ""
		document.screens.src = ""
		document.rustic.src = ""
		document.bifolds.src = ""
		document.components.src = ""

	}