(function($){

	$.fn.circularCarousel = function(visible, scroll, speed, prev, next, auto, theDelay, stopAutoAfterClick){

		var element = this;

		var elemLeft = 0;

		var noOfChildren = element.children().length;

		var firstChild = element.children(":first");

		var lastChild = element.children(":last");

		var one_height = firstChild.outerHeight(true);

		var one_width = firstChild.outerWidth(true);

		var noOfAffectedItems = scroll;

		var scrollWidth = one_width * scroll;

		var last_right_margin = parseFloat(firstChild.css('marginRight'));

		var theInterval;

		theDelay = theDelay * 1000;

		var maskWidth = visible * one_width ;

		var maskStyle = "width: " + maskWidth + "px; " + "height: " + one_height + "px; " + "position: relative; overflow: hidden;";

		element.wrap('<div class="mask" style="' + maskStyle + '"></div>');

		element.css({

			"position": "absolute",

			"top": "0",

			"left": "0",

			"width": noOfChildren * one_width + "px",

			"height": one_height + "px"

		});

		

		if(noOfChildren - scroll < scroll){

			noOfAffectedItems = 2 * scroll - noOfChildren;

		}

		

		function moveItem(start, cate){

			for(i = 1; i <= cate; i++){

				element.children(':eq('+start+')').clone(true).appendTo(element);

				element.children(':eq('+start+')').detach();

			}

			firstChild = element.children(":first");

			lastChild = element.children(":last");

		}

		

		function preClickNext(){

			next.unbind().bind('click', function(){ return false; });

			clearInterval(theInterval);

			if(noOfAffectedItems > 1){

				for(i = 0; i< noOfAffectedItems; i++){

					element.children(':eq('+i+')').clone(true).appendTo(element);

				}

				element.width((noOfChildren + noOfAffectedItems) * one_width);

			}

			clickNext();

			return false;

		}

		

		function clickNext(){

			element.animate({"left": -scrollWidth + "px"}, speed, "linear", function(){

				next.unbind().bind('click', preClickNext);

				if(noOfAffectedItems != 1){

					moveItem(noOfAffectedItems, scroll-noOfAffectedItems);

					for(i = 1; i <= noOfAffectedItems; i++){

						element.children(':eq(0)').detach();

					}

				} else {

					moveItem(0, scroll);

				}

				element.css("left", "0px");

				if(auto && !stopAutoAfterClick){

					theInterval = setInterval(preClickNext, theDelay);

				}

			});

			return false;

		}

		

		function preClickPrev(){

			prev.unbind().bind('click', function(){ return false; });

			clearInterval(theInterval);

			for(i = 1; i <= scroll; i++){

				var exp = noOfChildren - 1;

				element.children(':eq('+ exp +')').clone(true).prependTo(element);

			}

			element.width((noOfChildren + scroll) * one_width).css('left', -scrollWidth + 'px');

			clickPrev();

			return false;

		}

		

		function clickPrev(){

			element.animate({"left": "0px"}, speed, "linear", function(){

				prev.unbind().bind('click', preClickPrev);

				for(i = 1; i <= scroll; i++){

					element.children(':eq('+ noOfChildren +')').detach();

				}

				element.width(noOfChildren * one_width);

				if(auto && !stopAutoAfterClick){

					theInterval = setInterval(preClickNext, theDelay);

				}

			});

			return false;

		}

		

		next.click(preClickNext);

		prev.click(preClickPrev);

		

		if(auto){

			theInterval = setInterval(preClickNext, theDelay);

		}

	};

})(jQuery);