/*
* the Scroller by Phowsorks.
* Based on the Infinite Carousell Made By JQueryForDesigners.com
*
*/

$.fn.infiniteCarousel = function (custom) {


    function repeat(str, num) {
        return new Array( num + 1 ).join( str );
    }
  
    return this.each(function () {


		var $wrapper = $('.wrapper', this).css('overflow', 'hidden'),
            $slider = $wrapper.find('> ul'),
            $items = $slider.find('> li'),
            $single = $items.filter(':first'),
        
			singleWidth = $single.outerWidth(),
			visible = Math.ceil($wrapper.innerWidth() / singleWidth),
            currentPage = 1,
			cSpeed = 500,
            pages = Math.ceil($items.length); 
		var myInterval;
		
		// 1. If items is less then the visible items, abort the carousel
		if ( pages <= visible ) {
		return false
		}

        // 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) {
			
			controllerID = page -1;
			$(".carouselController").removeClass("carouselControllerCurrent");				
			if (page > pages ){
			$(".carouselController").eq(0).addClass("carouselControllerCurrent");			
			}
			else if(page == 0){
			$(".carouselController").eq(pages-1).addClass("carouselControllerCurrent");
			}
			else {
			$(".carouselController").eq(controllerID).addClass("carouselControllerCurrent");
			}
			
			
            var dir = page < currentPage ? -1 : 1,
                n = Math.abs(currentPage - page),
                left = singleWidth * dir * n;
            
            $wrapper.filter(':not(:animated)').animate({
                scrollLeft : '+=' + left
            }, cSpeed, function () {
                if (page == 0) {
                    $wrapper.scrollLeft(singleWidth * (pages+(visible-1)));
                    page = pages;
                } else if (page > pages) {
                    $wrapper.scrollLeft(singleWidth * visible);
                    // reset back to start position
                    page = 1;
                } 

                currentPage = page;
            });                
            
            return false;
        }
		
     function triggerTimer() {			
		myInterval = setInterval( function () { return gotoNextPage() },10000);	
	 }
	 
	 function clearTimer() {
		if ( myInterval !== undefined) {
		clearInterval(myInterval);		
		}

	 }
	 
	 function gotoNextPage() {
		gotoPage(currentPage + 1);
	 }
	 
        $wrapper.after('<span class="prevBtn"><a href="javascript:void(0);" class="png">Previous</a></span>');
		$wrapper.after('<span class="nextBtn"><a href="javascript:void(0);" class="png">Next</a></span>');
		
		if (custom == "pager")
		{
			numOfPages = $(".infiniteCarousel li").length -2;			
			for (var p=0; p<numOfPages; p++){
				$(".carouselControllerContainer").append('<a href="javascript:void(0);" class="carouselController">&nbsp;</a>');
			}
			$(".carouselController").eq(0).addClass("carouselControllerCurrent");
					
		}
		cSpeed = 1500;
		triggerTimer();	
		
        // 5. Bind to the forward and back buttons
        $('.prevBtn', this).click(function () {
			clearTimer();
            return gotoPage(currentPage - 1);  
			
        });
        
        $('.nextBtn', this).click(function () {
			clearTimer();
            return gotoPage(currentPage + 1);
        });
		
        // bind controlls to paging function
		$('.carouselController', this).click(function () {
            gotoPageNum = $(".carouselController").index(this) + 1;
			clearTimer();
			return gotoPage(gotoPageNum);
			
        });
		
        // create a public interface to move to a specific page
        $(this).bind('goto', function (event, page) {
			clearTimer();
            gotoPage(page);
        });
    });  
};

jQuery.extend( jQuery.easing,
{
	def: 'easeOutCubic',
	swing: function (x, t, b, c, d) {
		//alert(jQuery.easing.default);
		return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
	},
	easeOutCubic: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t + 1) + b;
	}
});