$.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 = $single.outerWidth(), 
            visible = 1, //Math.ceil($wrapper.innerWidth() / singleWidth), // note: doesn't include padding or border
            currentPage = 1,
            //pages = Math.ceil($items.length / visible);            
	    pages=$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(- 2).clone().addClass('cloned'));
        $items.filter(':last').after($items.slice(0, 2).clone().addClass('cloned'));
        $items = $slider.find(' li'); // reselect
        
        // 3. Set the left position to the first 'real' item
        $wrapper.scrollLeft(singleWidth);
        
        // 4. paging function
        function gotoPage(page) {
            var dir = page < currentPage ? -1 : 1,
                n = Math.abs(currentPage - page),
                left = singleWidth * dir * 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;
                } 
		//console.log(currentPage, pages);
                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);                
        });
        
        $('a.forward', this).click(function () {
            return gotoPage(currentPage + 1);
        });*/
        
        $('.panel1 a', this).click(function(){
        	$('.panel4').removeClass("active");
        	$('.panel2').removeClass("active");
        	$('.panel3').removeClass("active");
        	$('.panel1').addClass("active");
        	return gotoPage(1);
        });
        
        $('.panel2 a', this).click(function(){
                $('.panel1').removeClass("active");
        	$('.panel4').removeClass("active");
        	$('.panel3').removeClass("active");
        	$('.panel2').addClass("active");
        	return gotoPage(2);
        });
        
        $('.panel3 a', this).click(function(){
        	$('.panel1').removeClass("active");
        	$('.panel2').removeClass("active");
        	$('.panel4').removeClass("active");
        	$('.panel3').addClass("active");
        	return gotoPage(3);
        });
        
        $('.panel4 a', this).click(function(){
	        $('.panel1').removeClass("active");
        	$('.panel2').removeClass("active");
        	$('.panel3').removeClass("active");
        	$('.panel4').addClass("active");
        	return gotoPage(4);
        });
        
        // create a public interface to move to a specific page
        $(this).bind('goto', function (event, page) {
            gotoPage(page);
        });
    });  
};

jQuery(function($) { 
  $('.infiniteCarousel').infiniteCarousel();
  $('.panel1').addClass("active");

});