if (document.images) {
navbar1_off  = new Image(); navbar1_off.src  = "images/navbar_b1.gif"
navbar1_over = new Image(); navbar1_over.src = "images/navbar_b1_over.gif"
navbar2_off  = new Image(); navbar2_off.src  = "images/navbar_b2.gif"
navbar2_over = new Image(); navbar2_over.src = "images/navbar_b2_over.gif"
}

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");
	}
}