if (document.images)

		{

		programson = new Image(); programson.src = "images/nav/programs_on.png";

		programsoff = new Image(); programsoff.src = "images/nav/programs_off.png";

		

		publicationson = new Image(); publicationson.src = "images/nav/publications_on.png";

		publicationsoff = new Image(); publicationsoff.src = "images/nav/publications_off.png";

		

		eventson = new Image(); eventson.src = "images/nav/events_on.png";

		eventsoff = new Image(); eventsoff.src = "images/nav/events_off.png";

		

		supporton = new Image(); supporton.src = "images/nav/support_on.png";

		supportoff = new Image(); supportoff.src = "images/nav/support_off.png";

		

		abouton = new Image(); abouton.src = "images/nav/about_on.png";

		aboutoff = new Image(); aboutoff.src = "images/nav/about_off.png";

		

		presson = new Image(); presson.src = "images/nav/press_on.png";

		pressoff = new Image(); pressoff.src = "images/nav/press_off.png";

		

		arrowon = new Image(); arrowon.src = "images/arrow_on.gif";

		arrowoff = new Image(); arrowoff.src = "images/arrow_off.gif";

		}



		function imgOn(imgName) {

		if (document.images) {

		document[imgName].src = eval(imgName + "on.src");

		}

		}

		function imgOff(imgName) {

		if (document.images) {

		document[imgName].src = eval(imgName + "off.src");

		}

		}