var preloadFlag = false;

function preloadImages() {
	if (document.images) {

		welcomeOff = newImage("images/titles/indexTitle-off.jpg");
		welcomeOn = newImage("images/titles/indexTitle-on.jpg");

		newsOff = newImage("images/sidebar/newsButton-off.gif");
		aboutOff = newImage("images/sidebar/aboutButton-off.gif");
		tourOff = newImage("images/sidebar/tourButton-off.gif");
		reviewOff = newImage("images/sidebar/reviewButton-off.gif");
		musicOff = newImage("images/sidebar/musicButton-off.gif");
		bookingOff = newImage("images/sidebar/bookingButton-off.gif");
		contactOff = newImage("images/sidebar/contactButton-off.gif");

		newsOn = newImage("images/sidebar/newsButton-on.gif");
		aboutOn = newImage("images/sidebar/aboutButton-on.gif");
		tourOn = newImage("images/sidebar/tourButton-on.gif");
		reviewOn = newImage("images/sidebar/reviewButton-on.gif");
		musicOn = newImage("images/sidebar/musicButton-on.gif");
		bookingOn = newImage("images/sidebar/bookingButton-on.gif");
		contactOn = newImage("images/sidebar/contactButton-on.gif");	
		
		buyitOff = newImage("images/buttons/buyitButton-off.gif");
		buyitOn = newImage("images/buttons/buyitButton-on.gif");
		
		bioOff = newImage("images/buttons/bioButton-off.gif");
		scrapbookOff = newImage("images/buttons/scrapbookButton-off.gif");	
		linksOff = newImage("images/buttons/linksButton-off.gif");
		journalOff = newImage("images/buttons/journalButton-off.gif");			
		scheduleOff = newImage("images/buttons/scheduleButton-off.gif");		
		venuesOff = newImage("images/buttons/venuesButton-off.gif");		
		busOff = newImage("images/buttons/busButton-off.gif");
		buyOff = newImage("images/buttons/buyButton-off.gif");	
		criticOff = newImage("images/buttons/criticButton-off.gif");	
		fanOff = newImage("images/buttons/fanButton-off.gif");	
		writeOff = newImage("images/buttons/writeButton-off.gif");
		joinOff = newImage("images/buttons/joinButton-off.gif");
		cdOff = newImage("images/buttons/cdButton-off.gif");
		lyricsOff = newImage("images/buttons/lyricsButton-off.gif");
						
		bioOn = newImage("images/buttons/bioButton-on.gif");
		scrapbookOn = newImage("images/buttons/scrapbookButton-on.gif");	
		linksOn = newImage("images/buttons/linksButton-on.gif");
		journalOn = newImage("images/buttons/journalButton-on.gif");			
		scheduleOn = newImage("images/buttons/scheduleButton-on.gif");		
		venuesOn = newImage("images/buttons/venuesButton-on.gif");				
		busOn = newImage("images/buttons/busButton-on.gif");
		buyOn = newImage("images/buttons/buyButton-on.gif");				
		criticOn = newImage("images/buttons/criticButton-on.gif");	
		fanOn = newImage("images/buttons/fanButton-on.gif");	
		writeOn = newImage("images/buttons/writeButton-on.gif");	
		joinOn = newImage("images/buttons/joinButton-on.gif");
		cdOn = newImage("images/buttons/cdButton-on.gif");
		lyricsOn = newImage("images/buttons/lyricsButton-on.gif");
		
		preloadFlag = true;
	}
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function swapImages (anImage, theNewImage) {
	if (document.images && preloadFlag == true) {
		
		document.images[anImage].src = eval(theNewImage).src;
	}
}