document.observe("dom:loaded", function() {

var scrollbar = new Control.ScrollBar('scrollerContent','scrollerTrack');

var itemWidth = 260; //width of .listing-item divs

$('scrollLeft').observe('click',function(event){
	scrollbar.scrollBy(-itemWidth);
	event.stop();
});

$('scrollRight').observe('click',function(event){
	scrollbar.scrollBy(itemWidth);
	event.stop();
});

});