// Rollover functions

function newImage(arg) {

	if (document.images) {

		rslt = new Image();

		rslt.src = arg;

		return rslt;

	}

}



function changeImages() {

	if (document.images && (preloadFlag == true)) {

		for (var i=0; i<changeImages.arguments.length; i+=2) {

			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];

		}

	}

}



var preloadFlag = false;

	function preloadImages() {

		if (document.images) {

			nav_program_on = newImage("images/navigation/nav_program_on.jpg");

			nav_sample_on = newImage("images/navigation/nav_sample_on.jpg");

			nav_subscriber_on = newImage("images/navigation/nav_subscriber_on.jpg");

			nav_faqs_on = newImage("images/navigation/nav_faqs_on.jpg");

			nav_about_on = newImage("images/navigation/nav_about_on.jpg");

			nav_contact_on = newImage("images/navigation/nav_contact_on.jpg");		

			preloadFlag = true;

		}

	}