// JavaScript Document
(function () {
    $.fn.infiniteCarousel2 = function () {
        function repeat(str, n) {
            return new Array( n + 1 ).join(str);
        }
        
        return this.each(function () {
            // magic!
            var $wrapper = $('> div', this).css('overflow', 'hidden'),
                $slider = $wrapper.find('> ul').width(9999),
                $items = $slider.find('> li'),
                $single = $items.filter(':first')
                
                singleWidth = $single.outerWidth(),
                visible = Math.ceil($wrapper.innerWidth() / singleWidth),
                currentPage = 1,
                pages = Math.ceil($items.length / visible);
            /* TASKS */
            
            // 1. pad the pages with empty element if required
           if ($items.length % visible != 0) {
                // pad
                $slider.append(repeat('<li class="empty" />', visible - ($items.length % visible)));
           	   $items = $slider.find('> li');
            }
            
            // 2. create the carousel padding on left and right (cloned)
              $items.filter(':first').before($items.slice(-visible).clone().addClass('cloned'));
              $items.filter(':last').after($items.slice(0, visible).clone().addClass('cloned'));
          	  $items = $slider.find('> li');
            
            // 3. reset scroll
            $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 == last page - then reset position
                    if (page > pages) {
                        $wrapper.scrollLeft(singleWidth * visible);
                        page = 1;
                    } else if (page == 0) {
                        page = pages;
                        $wrapper.scrollLeft(singleWidth * visible * pages);
                    }
                    
                    currentPage = page;
                });
            }
            
            // 5. insert the back and forward link
            $wrapper.after('<a href="#" class="arrow back"><</a><a href="#" class="arrow forward">></a>');
            
            // 6. bind the back and forward links
            $('a.back', this).click(function () {
                gotoPage(currentPage - 1);
                return false;
            });
            
            $('a.forward', this).click(function () {
                gotoPage(currentPage + 1);
                return false;
            });
            
            $(this).bind('goto', function (event, page) {
                gotoPage(page);
            });  
            
            // THIS IS NEW CODE FOR THE AUTOMATIC INFINITE CAROUSEL
            $(this).bind('next', function () {
                gotoPage(currentPage + 1);
            });
        });
    };
})(jQuery);

$(document).ready(function () {
    // THIS IS NEW CODE FOR THE AUTOMATIC INFINITE CAROUSEL
    var autoscrolling = true;
    
    $('.infiniteCarousel2').infiniteCarousel2().mouseover(function () {
        autoscrolling = false;
    }).mouseout(function () {
        autoscrolling = true;
    });
    
    setInterval(function () {
        if (autoscrolling) {
            $('.infiniteCarousel2').trigger('next');
        }
    }, 9000);
});

var cart = {
	add_item : function(product_id){
		$.post("/PC_load_letter/cart_add/",{ product_id: product_id },
			function (data)
			{
				if(data == "FAIL")
				{
					alert("Our shopping cart encountered an error. Please try again or contact an administrator.");
				}
				else
				{
					var element = document.getElementById('js_cart');
					element.innerHTML = data;

					alert("The item was added to your shopping cart.");
				}
			}
		);
		return false;
	}
};