$(document).ready(function() {

	var speed = 10000;
	
	$('#mask-gallery, #gallery li').width($('#slider').width());	
	$('#gallery').width($('#slider').width() * $('#gallery li').length);
	$('#mask-gallery, #gallery li, #mask-excerpt, #excerpt li').height($('#slider').height());
	
	var run = setInterval('newsscoller(0)', speed);	
	
	$('#gallery li:first, #excerpt li:first').addClass('selected');

	$('#btn-pause').click(function () {
		clearInterval(run);
		return false;
	});

	$('#btn-play').click(function () {
		run = setInterval('newsscoller(0)', speed);	
		return false;
	});
	
	$('#btn-next').click(function () {
		newsscoller(0);	
		return false;
	});	

	$('#btn-prev').click(function () {
		newsscoller(1);	
		return false;
	});	
	
	$('#slider').hover(
	
		function() {
			clearInterval(run);
		}, 
		function() {
			run = setInterval('newsscoller(0)', speed);	
		}
	); 	
	
});


function newsscoller(prev) {

	var current_image = $('#gallery li.selected').length ? $('#gallery li.selected') : $('#gallery li:first');
	var current_excerpt = $('#excerpt li.selected').length ? $('#excerpt li.selected') : $('#excerpt li:first');

	if (prev) {
		
		var next_image = (current_image.prev().length) ? current_image.prev() : $('#gallery li:last');
		var next_excerpt = (current_excerpt.prev().length) ? current_excerpt.prev() : $('#excerpt li:last');
	
	} else {
		
		var next_image = (current_image.next().length) ? current_image.next() : $('#gallery li:first');
		var next_excerpt = (current_excerpt.next().length) ? current_excerpt.next() : $('#excerpt li:first');
	}

	$('#excerpt li, #gallery li').removeClass('selected');
	
	next_image.addClass('selected');
	next_excerpt.addClass('selected');

	$('#mask-gallery').scrollTo(next_image, 800);		
	$('#mask-excerpt').scrollTo(next_excerpt, 800);					
	
}