css:.myul {width: 1500px;overflow: hidden;position: absolute;}.myul li {width: 150px;height: 150px;float: left;overflow: hidden;position: relative;}.slidediv {float: left;width: 750px;height: 150px;overflow: hidden;position: relative;}HTML:<div class="slidediv"><ul class="myul"><li><a class="img_b"><img  alt="" width="150" height="150" src="data:images/1_s.jpg"/></a></li><li><a class="img_b" href="#"><img alt="" width="150" height="150" src="data:images/2_s.jpg"/></a></li></ul>
</div>

    <script type="text/javascript">$(function () {var $Ul = $(".myul");var fn = setInterval(autoScroll2, 2000);$Ul.mouseover(function () {clearInterval(fn);}).mouseout(function () {fn = setInterval(autoScroll2, 2000);});function autoScroll2() {$Ul.stop().animate({ left: -150 }, 500, function () {$(this).css({ left: 0 }).find("li:first").appendTo(this);//ul向左移动150，把移出的li放到最后，ul复原。
                });}});</script>

(function ($) {$.fn.ImgSlide = function (options) {var defaults = {showImages: 3,//默认显示图片数量speed: 400,//移动速度leftBtn: ".leftBtn", //默认左按钮rightBtn: ".rightBtn", //默认右按钮autoSlide: true,//默认自动移动为trueRightSlid: false, //默认向右移动为falseautoSpeed: 2000,//自动移动的时间moreSlide: "setOne" //多处图片移动，设置不同的class
        };var options = $.extend(defaults, options);var $this = $(this),li = $this.find('li'),myFn;var li_width = li.outerWidth(true);var liwidth =  li.width();$this.css({width: 5500,left:- li_width,overflow: "hidden",position: "absolute"});li.css({float: 'left',overflow: "hidden",position: "relative"});init();$(options.leftBtn).click(function () {MoveLeft();});//点击按钮向右移动;$(options.rightBtn).click(function () {MoveRight();});function init() {var showWidth = li_width * options.showImages ;$this.wrap("<div class='slidediv'></div>");$('.slidediv').css({height:liwidth,width: showWidth,overflow: "hidden",position: "relative",float: "left"});$this.animate({ left: 0 },0, function () {$(this).css({ left: -li_width }).find("li:last").prependTo(this);});if (options.autoSlide) {if (options.RightSlid) {myFn = setInterval(MoveRight, options.autoSpeed);autoSlides(MoveRight);}else {myFn = setInterval(MoveLeft, options.autoSpeed);autoSlides(MoveLeft);}}}function MoveLeft() {$this.stop().animate({ left: 0 }, options.speed, function () {$(this).css({ left: -li_width }).find("li:last").prependTo(this);});}function MoveRight() {$this.stop().animate({ left: -li_width*2 }, options.speed, function () {$(this).css({ left: -li_width }).find("li:first").appendTo(this);});}function autoSlides(fn) {$this.mouseover(function () {clearInterval(myFn);}).mouseout(function () {myFn = setInterval(fn, options.autoSpeed);});$(options.leftBtn).mouseover(function () {clearInterval(myFn);}).mouseout(function () {myFn = setInterval(fn, options.autoSpeed);});$(options.rightBtn).mouseover(function () {clearInterval(myFn);}).mouseout(function () {myFn = setInterval(fn, options.autoSpeed);});}}
})(jQuery);

    <script type="text/javascript">$(function () {$('.myul').ImgSlide({showImages: 6});});</script>