// JavaScript Document

(function($) {
$.fn.extend({
	scrollList : function(direction, pixels_per_second, delay) {
		if ('undefined' == typeof(pixels_per_second)) {pixels_per_second = 20;}
		if ('undefined' == typeof(delay)) {delay = 1000;}
		if ('undefined' == typeof(direction) || -1 == $.inArray(direction, ['up', 'down', 'left', 'right'])) {direction = 'up';}

		var $list = $(this);
		var $lis = $list.children('li');
		var $current_li;
		var pixels_per_millisecond = pixels_per_second / 1000;
		var easing = (delay == 0) ? 'linear' : 'swing';
		var tout;

		if ('static' == $list.css('position')) {$list.css('position', 'relative');}

		if ('left' == direction || 'right' == direction) {
			var text = [];
			this.each(function() {
				var children = this.childNodes;
				for (var i = 0; i < children.length; i++) {
					var child = children[i];
					if (child.nodeType == 3) {
						text.push(child);
					}
				}
			});

			$(this.pushStack(text)).remove();
		}

		if ('up' == direction || 'left' == direction) {
			$current_li = $lis.filter(':first');
		} else {
			var $last_li = $lis.filter(':last');
			if ('down' == direction) {
				$list.css('top', '-' + $last_li.outerHeight() + 'px');
			} else {
				$list.css('left', '-' + $last_li.outerWidth() + 'px');
			}
			$last_li.remove();
			$lis.filter(':first').before($last_li);
			$lis = $list.children('li');
			$current_li = $lis.filter(':last');
		}

		function scrollListNext() {
			var distance, property;
			var css = {};

			if ('up' == direction || 'down' == direction) {
				property = 'top';             
				distance = $current_li.outerHeight();
			} else {
				property = 'left';             
				distance = $current_li.outerWidth();
			}

			switch (direction) {
				case 'up':   
					css.top = '-' + distance + 'px';
					break;

				case 'right':
					css.left = 0;
					break;

				case 'down':
					css.top = 0;
					break;

				case 'left':
					css.left = '-' + distance + 'px';
					break;
			};

			var duration = distance / pixels_per_millisecond;
			$list.animate(css, duration, easing, function() {
				$current_li.remove();
				if ('up' == direction || 'left' == direction) {
					$list.css(property, 0);
					$lis.filter(':last').after($current_li);
					$lis = $list.children('li');
					$current_li = $lis.filter(':first');
				} else {
					$list.css(property, '-' + distance + 'px');
					$lis.filter(':first').before($current_li);
					$lis = $list.children('li');
					$current_li = $lis.filter(':last');
				}

				tout = setTimeout(scrollListNext, delay);
			});
		};

		$list.hover(
			function() {
				clearTimeout(tout);
			},
			function() {
//				scrollListNext();
				tout = setTimeout(scrollListNext, delay);
			}
		);

		tout = setTimeout(scrollListNext, delay);
	}
});
})(jQuery);