if (document.images) {
	ForwardButtonOn = new Image();
	ForwardButtonOn.src = "../@Images/ForwardButtonOn.png";

	ForwardButtonOff = new Image();
	ForwardButtonOff.src = "../@Images/ForwardButtonOff.png";

	BackwardButtonOn = new Image();
	BackwardButtonOn.src = "../@Images/BackwardButtonOn.png";

	BackwardButtonOff = new Image();
	BackwardButtonOff.src = "../@Images/BackwardButtonOff.png";
}

function activate(image_name) {
	if (document.images) {
		document[image_name].src = eval(image_name + "ButtonOn.src");
	}
}

function deactivate(image_name) {
	if (document.images) {
		document[image_name].src = eval(image_name + "ButtonOff.src");
	}
}