Edit in JSFiddle

 $(document).ready(function() {
                var $wrapper = $('#scroller a img');
                var animator = function(img) {
                    img.animate({left: -950}, 5000, function() {
                        img.css({left: 450});
                        animator($(this));
                    });
                }

                animator($wrapper);
                $wrapper.hover(function() {
//                    stop()方法停止当前动画
                    $wrapper.stop();
                }, function() {
                    animator($wrapper);
                })
            });

 <div id="scroller">
            <div id="images">
                <a href="#"><img src="http://images.cnitblog.com/i/429080/201404/191316375105721.jpg" alt="" width="150" height="150" /></a>
                <a href="#"><img src="http://images.cnitblog.com/i/429080/201404/191316590418775.jpg" alt="" width="150" height="150"/></a>
                <a href="#"><img src="http://images.cnitblog.com/i/429080/201404/191317072443869.jpg" alt="" width="150" height="150" /></a>
                <a href="#"><img src="http://images.cnitblog.com/i/429080/201404/191317187606119.jpg" alt="" width="150" height="150" /></a>
                <a href="#"><img src="http://images.cnitblog.com/i/429080/201404/191317256198955.jpg" alt="" width="150" height="150"/></a>
                <a href="#"><img src="http://images.cnitblog.com/i/429080/201404/191317413537514.jpg" alt="" width="150" height="150" /></a>
            </div>
        </div>

 /*只能容纳显示一张图片*/
            #scroller{
                margin: auto;
                height: 150px;
                width: 460px;
                /*设置 position为relative，让图片移动以scroller的左上角为基点*/
                position: relative;
                /*超出范围的隐藏*/
                overflow: hidden;
                /*设置边框样式*/
                border: 1px saddlebrown dashed;
            }

            #images{
                width: 950px;

            }
            #images a img{
                border: 0;
                /*图片要实现动画效果，必须要设置此CSS属性*/
                position: relative;
            }