var currentImage = 0;
var numImages = 6;
var baseOffset = 320;

function startScroller()
{
	//$('scrollerUL').style.width = (numImages+1)*baseOffset + "px";
	$('scrollerUL').style.height = (numImages+1)*baseOffset + "px";
	showNextImage();
}
			
function showNextImage()
{
	if(currentImage == numImages){
		//$('scrollerUL').style.marginLeft = "0px";
		$('scrollerUL').style.marginTop = "0px";
		currentImage = 0;
	}
	
	new Effect.Tween($('scrollerUL'), -currentImage*baseOffset, -(currentImage+1)*baseOffset, { delay: 4, duration: 1, afterFinish : showNextImage },
		function(p){ 
			//$('scrollerUL').style.marginLeft = p + "px";
			$('scrollerUL').style.marginTop = p + "px";
		}
	);
	
	currentImage++;	
}