// JavaScript Document
$.fn.infiniteCarousel = function () {
 
    function repeat(str, num) {
        return new Array( num + 1 ).join( str );
    }
  
    return this.each(function () {
        var $wrapper = $('> div', this).css('overflow', 'hidden'),
            $slider = $wrapper.find('> ul'),
            $items = $slider.find('> li'),
            $single = $items.filter(':first'),
            
            singleWidth = $single.outerWidth(), //Total width of one item
            visible = 1, //Math.ceil($wrapper.innerWidth() / singleWidth), // Number of element visible. note: doesn't include padding or border
            currentPage = 1,
            pages = Math.ceil($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 - singleWidth);
        
        // 4. paging function
        function gotoPage(page) {
		var dir = page < currentPage ? -1 : 1, //Direction
		n = Math.abs(currentPage - page), //Number of steps
		left = singleWidth * dir * visible * n; //The left position            
            $wrapper.filter(':not(:animated)').animate({
                scrollLeft : '+=' + left
            }, 500, function () {
 
                if (page == 0) { //Scrolled before first page, reset to last page
                    //$wrapper.scrollLeft(singleWidth * visible * pages - singleWidth);
                    page = pages;
                } else if (page > pages) { //Beyond last page, reset to first
                    $wrapper.scrollLeft(singleWidth * visible - singleWidth);
                    // reset back to start position
                    page = 1;
                } 
 
 
                currentPage = page;
            });                
            
            return false;
        }
        
        $wrapper.after('<a class="arrow back">&lt;</a><a class="arrow forward">&gt;</a>');
        
        // 5. Bind to the forward and back buttons
        $('a.back', this).click(function () {
            return gotoPage(currentPage - 1);                
        });
        
        $('spotted_slider_container slider_container sliderGallery ul a.forward', this).click(function () {
            return gotoPage(currentPage + 1);
        });
		
		//Bind page selector
        $('a.goto_page', this).click(function () {
            return gotoPage(parseInt($(this).attr('title')));
        });		
        
        // create a public interface to move to a specific page
        $(this).bind('goto', function (event, page) {
            gotoPage(page);
        });
    });  
};