function show_div(div_id) {
	var menu = new Array()
	menu[0] = "home";
	menu[1] = "about_us";
	menu[2] = "galleries";
	menu[3] = "press_room";
	menu[4] = "workshop";
	menu[5] = "education";
	menu[6] = "contact_us";
	for (var i=0; i<menu.length; i++) {
		if (menu[i] == div_id) {
			// Do nothing because this is the div we want to show
		} else {
			// We hide the div	
			document.getElementById(menu[i]).style.display = 'none';
		}
	}
    // Show the requested div
    document.getElementById(div_id).style.display = 'block';
}