$.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 = Math.floor($wrapper.innerWidth() / singleWidth), // note: doesnt include padding or border
			
			
            currentPage = 1,
            pages = Math.ceil($items.length / visible);
			/*
			alert($wrapper.innerWidth() + 'inner W');
			alert(visible + ' visi');
			alert(singleWidth + ' singleW');
			*/

        // 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)
		{
            left = getLeft(page);
            
            $wrapper.filter(':not(:animated)').animate({
                scrollLeft : '+=' + left
            }, 500, function () 
			{
				checkPage(page);
            });                
            
            return false;
        }
		
		function checkPage(page)
		{
			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;
		}
		
		function setPage(page)
		{
			left = getLeft(page);
		 	$wrapper.filter(':not(:animated)').animate({
                scrollLeft : '+=' + left},0, function ()
				{
					checkPage(page);
				});
		}
		
		function getLeft(page)
		{
            var dir = page < currentPage ? -1 : 1,
                n = Math.abs(currentPage - page),
                left = singleWidth * dir * visible * n;
				
			return left;
		}
        
        $wrapper.after('<a class="arrow back"></a><a class="arrow forward"></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);
        });
        
        // create a public interface to move to a specific page
        $(this).bind('goto', function (event, page) {
            gotoPage(page);
        });
		
		$(this).bind('setpage', function (event, page)
			{
				setPage(page);
				
			});
    });  
};