var howManyMoved  = 0;


function slideImages() {

	var slideShowWidth = parseInt(document.getElementById("slideshow").style.width);
	var moveBy        = 475;
	var howManyImages = slideShowWidth / moveBy;
	
	if(howManyMoved == howManyImages - 1) {
	
		var moveDiv = new Fx.Style($('slideshow'),
		'left', {duration: 500});
		moveDiv.start(0);
		howManyMoved = 0;
	
	}
	else {
		
		var previousValue  = document.getElementById('slideshow').style.left;
		previousValue      = parseInt(previousValue);
		
		
		var howMuchToMove = previousValue - moveBy;
		
		// Move the images
		var moveDiv = new Fx.Style($('slideshow'),
		'left', {duration: 500});
		moveDiv.start(howMuchToMove);
		
		howManyMoved++;
	}
	
	
}

window.onload = setInterval ( "slideImages()", 5000 );