$(document).ready(function () {
            //move the last list item before the first item. The purpose of this is if the user clicks previous he will be able to see the last item.
            $('#carousel_ul li:first').before($('#carousel_ul li:last'));

            //when user clicks the image for sliding right
            $('#left_scroll').click(function(){

            //get the width of the items ( i like making the jquery part dynamic, so if you change the width in the css you won't have o change it here too ) '
            var item_width = $('#carousel_ul li').outerWidth() + 4;

            //calculate the new left indent of the unordered list
            var left_indent = parseInt($('#carousel_ul').css('left')) - item_width;

            //make the sliding effect using jquery's anumate function '
            $('#carousel_ul:not(:animated)').animate({'left' : left_indent},500,function(){

            //get the first list item and put it after the last list item (that's how the infinite effects is made) '
            $('#carousel_ul li:last').after($('#carousel_ul li:first'));

            //and get the left indent to the default -210px
            $('#carousel_ul').css({'left' : '-387px'});    
 
            });
        });

            //when user clicks the image for sliding left
            $('#right_scroll').click(function(){

            var item_width = $('#carousel_ul li').outerWidth() + 4;

            /* same as for sliding right except that it's current left indent + the item width (for the sliding right it's - item_width) */
            var left_indent = parseInt($('#carousel_ul').css('left')) + item_width;

            $('#carousel_ul:not(:animated)').animate({'left' : left_indent},500,function(){
            /* when sliding to left we are moving the last item before the first item */
            $('#carousel_ul li:first').before($('#carousel_ul li:last'));

            /* and again, when we make that change we are setting the left indent of our unordered list to the default -210px */
            $('#carousel_ul').css({'left' : '-387px'});     
     
            });
        });
        
            //move the last list item before the first item. The purpose of this is if the user clicks previous he will be able to see the last item.
        //    $('.albumPreview li:first').before($('.albumPreview li:last'));

            //when user clicks the image for sliding right
            $('.photo_top_scroll').click(function(){

            //get the width of the items ( i like making the jquery part dynamic, so if you change the width in the css you won't have o change it here too ) '
            var item_width = $('.albumPreview li').outerWidth() + 4;

            //calculate the new left indent of the unordered list
            var left_indent = parseInt($('.albumPreview').css('top')) - item_width;

            //make the sliding effect using jquery's anumate function '
            $('.albumPreview:not(:animated)').animate({'top' : left_indent},500,function(){

            //get the first list item and put it after the last list item (that's how the infinite effects is made) '
            $('.albumPreview li:last').after($('.albumPreview li:first'));

            //and get the left indent to the default -210px
            $('.albumPreview').css({'top' : '-127px'});    
 
            });
        });

            //when user clicks the image for sliding left
            $('.photo_bottom_scroll').click(function(){

            var item_width = $('.albumPreview li').outerWidth() + 4;

            /* same as for sliding right except that it's current left indent + the item width (for the sliding right it's - item_width) */
            var left_indent = parseInt($('.albumPreview').css('top')) + item_width;

            $('.albumPreview:not(:animated)').animate({'top' : left_indent},500,function(){
            /* when sliding to left we are moving the last item before the first item */
            $('.albumPreview li:first').before($('.albumPreview li:last'));
              
            /* and again, when we make that change we are setting the left indent of our unordered list to the default -210px */
            $('.albumPreview').css({'top' : '-127px'});     
     
            });
        }); 
 });