if (document.images) {
	var buttons = new Object();
	buttons[1] = new Image(172, 106);
	buttons[1].src = "/images/side_nav/events_over.jpg";
	buttons[2] = new Image(172, 106);
	buttons[2].src = "/images/side_nav/events_ro.jpg";
	buttons[3] = new Image(172, 106);
	buttons[3].src = "/images/side_nav/photojournalism_over.jpg";
	buttons[4] = new Image(172, 106);
	buttons[4].src = "/images/side_nav/photojournalism_ro.jpg";
	buttons[5] = new Image(172, 106);
	buttons[5].src = "/images/side_nav/portraits_over.jpg";
	buttons[6] = new Image(172, 106);
	buttons[6].src = "/images/side_nav/portraits_ro.jpg";

}