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) {
		fcp_logo_over = newImage("graphics/fcp_logo_over.gif");
		print_this_transcript_over = newImage("graphics/print_this_transcript_over.gif");
		back_to_feature_over = newImage("graphics/back_to_feature_over.gif");
		back_to_topics_over = newImage("graphics/back_to_topics_over.gif");
		
		preloadFlag = true;
	}
}