// JavaScript Document
//shelf slidebox ----------------------------------------------
$.fn.shelf_in = function () {

    function repeat(str, num) {
        return new Array( num + 1 ).join( str );
    }
  
    return this.each(function () {
				   
			
			
        var $slide = $('> div', this).css('overflow', 'hidden'),
            $slider = $slide.find('> ul'),
            $items = $slider.find('> li'),
			$items_start = $slider.find('.review_middle'),
			$items_end = $slider.find('.book_baloon'),
			
            $single = $items.filter(':first'),
            
            singleWidth = 14+ $single.outerWidth(), 
            visible = Math.ceil($slide.innerWidth() / singleWidth ), // note: doesn't include padding or border
            currentPage = 1,
            pages = Math.ceil($items.length / visible);
			


        // 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
        $slide.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;
            
            $slide.filter(':not(:animated)').animate({
                scrollLeft : '+=' + left
            }, 500, function () {
                if (page == 0) {
                    $slide.scrollLeft(singleWidth * visible * pages );
                    page = pages;
                } else if (page > pages) {
                    $slide.scrollLeft(singleWidth * visible );
                    // reset back to start position
                    page = 1;
                } 

                currentPage = page;
            });                
            
            return false;
        }
		
		$('.big_books').after('<div class="page_select"><a class="page back">&lt;</a><a class="page forward">&gt;</a></div>');
		
        
        // 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);
        });
    });  
};

//----------------------------------------------------

//ranking slidebox ----------------------------------------------

$.fn.ranking_in = function () {

    function repeat(str, num) {
        return new Array( num + 1 ).join( str );
    }
  
    return this.each(function () {
        var $slide2 = $('> div', this).css('overflow', 'hidden'),
            $slider2 = $slide2.find('> ul'),
            $items2 = $slider2.find('> li'),
			$items_end = $slider2.find('.book_base'),
            $single2 = $items2.filter(':first'),
            
            singleWidth2 = $single2.outerWidth(), 
            visible = Math.ceil($slide2.innerWidth() / singleWidth2), // note: doesn't include padding or border
            currentPage = 1,
            pages = Math.ceil($items2.length / visible); 
		
		$items_end.after('<div class="book_ranking_bottom"><!--bottom img--></div>');


        // 1. Pad so that 'visible' number will always be seen, otherwise create empty items
        if (($items2.length % visible) != 0) {
            $slider2.append(repeat('<li class="empty" />', visible - ($items2.length % visible)));
            $items2 = $slider2.find('> li');
        }

        // 2. Top and tail the list with 'visible' number of items, top has the last section, and tail has the first
        $items2.filter(':first').before($items2.slice(- visible).clone().addClass('cloned'));
        $items2.filter(':last').after($items2.slice(0, visible).clone().addClass('cloned'));
        $items2 = $slider2.find('> li'); // reselect
        
        // 3. Set the left position to the first 'real' item
        $slide2.scrollLeft(singleWidth2 * visible);
        
        // 4. paging function
        function gotoPage(page) {
            var dir = page < currentPage ? -1 : 1,
                n = Math.abs(currentPage - page),
                left = singleWidth2 * dir * visible * n;
            
            $slide2.filter(':not(:animated)').animate({
                scrollLeft : '+=' + left
            }, 500, function () {
                if (page == 0) {
                    $slide2.scrollLeft(singleWidth2 * visible * pages);
                    page = pages;
                } else if (page > pages) {
                    $slide2.scrollLeft(singleWidth2 * visible);
                    // reset back to start position
                    page = 1;
                } 

                currentPage = page;
            });                
            
            return false;
        }
        
		$('.big_books').after('<div class="page_select"><a class="page back">&lt;</a><a class="page forward">&gt;</a></div>');
        
        // 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);
        });
    });  
};

//----------------------------------------------------

//slide start--------------------------------------------
$(document).ready(function(){
	 $('.shelf_in').shelf_in();
	 $('.ranking_in').ranking_in();
	
});
//----------------------------------------------------