var preloadFlag = false;

function preloadImages() {
	if (document.images) {
		
		imgMusicOn = NewImage('/images/sidebar/on/music.gif');
		imgMusicOff = NewImage('/images/sidebar/off/music.gif');
		imgNewsOn = NewImage('/images/sidebar/on/news.gif');
		imgNewsOff = NewImage('/images/sidebar/off/news.gif');
		imgContactOn = NewImage('/images/sidebar/on/contact.gif');
		imgContactOff = NewImage('/images/sidebar/off/contact.gif');
		imgBuyOn = NewImage('/images/sidebar/on/buy.gif');
		imgBuyOff = NewImage('/images/sidebar/off/buy.gif');
		imgShowsOn = NewImage('/images/sidebar/on/shows.gif');
		imgShowsOff = NewImage('/images/sidebar/off/shows.gif');
		imgBioOn = NewImage('/images/sidebar/on/bio.gif');
		imgBioOff = NewImage('/images/sidebar/off/bio.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;
	}
}

function turnOn (anImage) {
	if (document.images && preloadFlag == true) {
		document.images[anImage].src = eval(anImage + 'On').src;
	}
}

function turnOff (anImage) {
	if (document.images && preloadFlag == true) {
		document.images[anImage].src = eval(anImage + 'Off').src;
	}
}