var displayedPic = '1';
function fadeIn(showDiv) {
	if(showDiv != displayedPic)
	{
		new Effect.Opacity(displayedPic, { from: 1, to: 0, duration: 0.3});
		new Effect.Opacity(showDiv, { from: 0, to: 1, duration: 0.3});
		displayedPic = showDiv;
	}
}
function gallerySetup() {
	new Effect.Opacity('4', {from: 0, to: 0, duration: .1});
	new Effect.Opacity('3', {from: 0, to: 0, duration: .1});
	document.getElementById('2').style.visibility="visible";
	document.getElementById('3').style.visibility="visible";
	document.getElementById('4').style.visibility="visible";
}