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) {
		button01_bio_over = newImage("images/button01_bioalt_over.jpg");
		button02_discography_over = newImage("images/button02_discographyalt_over.jpg");
		button03_samples_over = newImage("images/button03_samplesalt_over.jpg");
		button04_press_over = newImage("images/button04_pressalt_over.jpg");
		button05_events_over = newImage("images/button05_eventsalt_over.jpg");
		button06_lessons_over = newImage("images/button06_lessonsalt_over.jpg");
		button07_news_over = newImage("images/button07_newsalt_over.jpg");
		button08_photos_over = newImage("images/button08_photosalt_over.jpg");
		button09_links_over = newImage("images/button09_linksalt_over.jpg");
		button10_contact_over = newImage("images/button10_contactalt_over.jpg");
		preloadFlag = true;
	}
}