$.fn.infiniteCarousel = function () {

    function repeat(str, num) {
        return new Array( num + 1 ).join( str );
    }
  
  
    return this.each(function () {
        var $wrapper = $(".sliderWrapperIn").css('overflow', 'hidden'),
            $slider = $wrapper.find('> ul'),
            $items = $slider.find('> li'),
            $single = $items.filter(':first'),
            singleWidth = $single.outerWidth(), 
            visible = Math.ceil($wrapper.innerWidth() / singleWidth), // note: doesn't include padding or border
            currentPage = 1,
            pages = Math.ceil($items.length / visible);    
                                    
                        
		var itemCount = $items.length;

        // 1. Pad so that 'visible' number will always be seen, otherwise create empty items
        if (($items.length % visible) != 0) {
            $slider.append(repeat('<li class="empty" />', visible - ($items.length % visible)));
            $items = $slider.find('> li');
        }

        // 2. Top and tail the list with 'visible' number of items, top has the last section, and tail has the first
        $items.filter(':first').before($items.slice(- visible).clone().addClass('cloned'));
        $items.filter(':last').after($items.slice(0, visible).clone().addClass('cloned'));
        $items = $slider.find('> li'); // reselect
        
        // 3. Set the left position to the first 'real' item
        $wrapper.scrollLeft(singleWidth * visible);
        
        
        // 4. paging function
        function gotoPage(page) {

            var dir = page < currentPage ? -1 : 1,
                n = Math.abs(currentPage - page),
                left = singleWidth * dir * visible * n;
            
            $wrapper.filter(':not(:animated)').animate({
                scrollLeft : '+=' + left
            }, 500, function () {
                if (page == 0) {
                    $wrapper.scrollLeft(singleWidth * visible * pages);
                    page = pages;
                } else if (page > pages) {
                  	$wrapper.scrollLeft(singleWidth * visible);
                    // reset back to start position
                    page = 1;
                } 
                currentPage = page;
            });
            if(page==0) {
            	$("#sliderImg1").attr("src", "fileadmin/templates/media/images/slider_1_3.jpg");
            	$("#sliderImg2").attr("src", "fileadmin/templates/media/images/slider_2_1.jpg");
            	$("#sliderImg3").attr("src", "fileadmin/templates/media/images/slider_3_2.jpg");
            }
            if(page==1) {
            	$("#sliderImg1").attr("src", "fileadmin/templates/media/images/slider_1_1.jpg");
            	$("#sliderImg2").attr("src", "fileadmin/templates/media/images/slider_2_2.jpg");
            	$("#sliderImg3").attr("src", "fileadmin/templates/media/images/slider_3_3.jpg");
            }
            if(page==2) {
            	$("#sliderImg1").attr("src", "fileadmin/templates/media/images/slider_1_2.jpg");
            	$("#sliderImg2").attr("src", "fileadmin/templates/media/images/slider_2_3.jpg");
            	$("#sliderImg3").attr("src", "fileadmin/templates/media/images/slider_3_1.jpg");
            }
            if(page==3) {
            	$("#sliderImg1").attr("src", "fileadmin/templates/media/images/slider_1_3.jpg");
            	$("#sliderImg2").attr("src", "fileadmin/templates/media/images/slider_2_1.jpg");
            	$("#sliderImg3").attr("src", "fileadmin/templates/media/images/slider_3_2.jpg");
            }
            if(page==4) {
            	$("#sliderImg1").attr("src", "fileadmin/templates/media/images/slider_1_1.jpg");
            	$("#sliderImg2").attr("src", "fileadmin/templates/media/images/slider_2_2.jpg");
            	$("#sliderImg3").attr("src", "fileadmin/templates/media/images/slider_3_3.jpg");
            }    
            return false;
        }
        if(itemCount > 0) {
        	$wrapper.after('<a class="btnBack"></a><a class="btnNext"></a>');
        }
        // 5. Bind to the forward and back buttons
        $('a.btnBack', this).click(function () {
            return gotoPage(currentPage - 1);                
        });
        
        $('a.btnNext', this).click(function () {
            return gotoPage(currentPage + 1);
        });
        
        // create a public interface to move to a specific page
        $(this).bind('goto', function (event, page) {
            gotoPage(page);
        });
    });  
};

$(document).ready(function () {
  $('.sliderWrapperOut').infiniteCarousel();
});