carousel_item = '';

function selectItem(item) {

	scrollToItem('carousel',item);
				
	$('carousel_nav').getElements('a').each(function(item, index){
		item.removeClass('selected');
	});

	theItem = item+'_tab';
	$(theItem).addClass('selected');

}


function scrollToItem(Parent,Child) {			
	new Fx.Scroll($(Parent), {
		wait: false,
		duration: 500,
		transition: Fx.Transitions.Quad.easeInOut
	}).toElement($(Child));

	carousel_item = Child;

}

function nextItem() {			
	
	if(carousel_item == '') {
		carousel_item = $('slider').getFirst().id;
	}
	
	if($('slider').getLast().id != carousel_item) {
		carousel_item = $(carousel_item).getNext().id;
		selectItem(carousel_item);
	}			
	
}

function prevItem() {
	
	if(carousel_item == '') {
		carousel_item = $('slider').getFirst().id;
	}
	
	if($('slider').getFirst().id != carousel_item) {
		carousel_item = $(carousel_item).getPrevious().id;
		selectItem(carousel_item);
	}
	
}