var DURATION = 0.4;  /* Number of seconds taken for transition */
var BORDER_OFFSET = 0; /* Offset to width of thumbnail from border or margin values */

function scrollPhotos(distance, id) {
	
	var list = document.getElementById('photoList'+id);
	var elements = list.getElementsByTagName('li');
	
	var totalWidth = 0;
	
	for (i=0; i<elements.length; i++) {
		totalWidth += elements[i].offsetWidth + BORDER_OFFSET;
	}
		
	new Slider('thumbnailsSlider'+id,'thumbnailsViewport'+id, distance, 0, DURATION, totalWidth, -1);
}