$(function () {
    $('ul.spy1').simpleSpy1();
	$('ul.spy2').simpleSpy2();
});

(function ($) {
    
$.fn.simpleSpy1 = function (limit, interval) {
    limit = limit || 5;
    interval = interval || 5000;
    
    return this.each(function () {
        // 1. setup
            // capture a cache of all the list items
            // chomp the list down to limit li elements
        var $list = $(this),
            items = [], // uninitialised
            currentItem = limit,
            total = 0, // initialise later on
            height = $list.find('> li:first').height();
            
        // capture the cache
        $list.find('> li').each(function () {
            items.push('<li>' + $(this).html() + '</li>');
        });
        
        total = items.length;
        
        $list.wrap('<div class="spyWrapper" />').parent().css({ height : height * limit });
        
        $list.find('> li').filter(':gt(' + (limit - 1) + ')').remove();

        // 2. effect        
        function spy1() {
            // insert a new item with opacity and height of zero
            var $insert = $(items[currentItem]).css({
                height : 0,
                opacity : 0,
                display : 'none'
            }).prependTo($list);
                        
            // fade the LAST item out
            $list.find('> li:last').animate({ opacity : 0}, 1000, function () {
                // increase the height of the NEW first item
                $insert.animate({ height : height }, 1000).animate({ opacity : 1 }, 1000);
                
                // AND at the same time - decrease the height of the LAST item
                // $(this).animate({ height : 0 }, 1000, function () {
                    // finally fade the first item in (and we can remove the last)
                    $(this).remove();
                // });
            });
            
            currentItem++;
            if (currentItem >= total) {
                currentItem = 0;
            }
            setTimeout(spy1, interval)
        }
        
        spy1();
    });
};

$.fn.simpleSpy2 = function (limit, interval) {
    limit = limit || 5;
    interval = interval || 5000;
    return this.each(function () {
        // 1. setup
            // capture a cache of all the list items
            // chomp the list down to limit li elements
        var $list = $(this),
            items = [], // uninitialised
            currentItem = limit,
            total = 0, // initialise later on
            height = $list.find('> li:first').height();
            
        // capture the cache
        $list.find('> li').each(function () {
            items.push('<li>' + $(this).html() + '</li>');
        });
        
        total = items.length;
        
        $list.wrap('<div class="spyWrapper" />').parent().css({ height : height * limit });
        
        $list.find('> li').filter(':gt(' + (limit - 1) + ')').remove();

        // 2. effect        
        function spy2() {
        	if (count != 0) {
	            // insert a new item with opacity and height of zero
	            var $insert = $(items[currentItem]).css({
	                height : 0,
	                opacity : 0,
	                display : 'none'
	            }).prependTo($list);
	
	            // fade the LAST item out
	            $list.find('> li:last').animate({ opacity : 0}, 1000, function () {
	                // increase the height of the NEW first item
	                $insert.animate({ height : height }, 1000).animate({ opacity : 1 }, 1000);
	                
	                // AND at the same time - decrease the height of the LAST item
	                // $(this).animate({ height : 0 }, 1000, function () {
	                    // finally fade the first item in (and we can remove the last)
	                    $(this).remove();
	                // });
	            });
	            
	            currentItem++;
	            if (currentItem >= total) {
	                currentItem = 0;
	            }
        	}
        	
            if (count == 0) {
            	interval = 2500;
            } else {
            	interval = 5000;
            }
            
            count++;
            setTimeout(spy2, interval);
			
        }
        
        spy2();
    });
};

})(jQuery);