$(document).ready(function () {

    var speed = 8000;

    $('#mask-gallery, #gallery li').width($('#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, 1500);
    $('#mask-excerpt').scrollTo(next_excerpt, 1500);

}