<!--

	nav_security_off = new Image();
	nav_security_off.src = "images/nav_off_security.gif";
	nav_security_on = new Image();
	nav_security_on.src = "images/nav_on_security.gif";

	nav_equipment_off = new Image();
	nav_equipment_off.src = "images/nav_off_equipment.gif";
	nav_equipment_on = new Image();
	nav_equipment_on.src = "images/nav_on_equipment.gif";

	function imageon(imagename) {
		imgOn = eval(imagename + "_on.src");
		document[imagename].src = imgOn;
	}

	function imageoff(imagename) {
		imgOff = eval(imagename + "_off.src");
		document[imagename].src = imgOff;
	}

//-->