if (document.images) {
menu_b1_off = new Image(); menu_b1_off.src = "images/b_inicio.jpg"
menu_b1_over = new Image(); menu_b1_over.src = "images/b_inicio_over.jpg"
menu_b2_off = new Image(); menu_b2_off.src = "images/b_servicio.jpg"
menu_b2_over = new Image(); menu_b2_over.src = "images/b_servicio_over.jpg"
menu_b3_off = new Image(); menu_b3_off.src = "images/b_ataf.jpg"
menu_b3_over = new Image(); menu_b3_over.src = "images/b_ataf_over.jpg"
menu_b4_off = new Image(); menu_b4_off.src = "images/b_fotos.jpg"
menu_b4_over = new Image(); menu_b4_over.src = "images/b_fotos_over.jpg"
menu_b5_off = new Image(); menu_b5_off.src = "images/b_foro.jpg"
menu_b5_over = new Image(); menu_b5_over.src = "images/b_foro_over.jpg"
menu_b6_off = new Image(); menu_b6_off.src = "images/b_enlaces.jpg"
menu_b6_over = new Image(); menu_b6_over.src = "images/b_enlaces_over.jpg"
}

function turn_off(ImageName) {
	if (document.images != null) {
		document[ImageName].src = eval(ImageName + "_off.src");
	}
}

function turn_over(ImageName) {
	if (document.images != null) {
		document[ImageName].src = eval(ImageName + "_over.src");
	}
}