<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta charset="UTF-8">
    <title>无缝滚动</title>
    <style>
        * {margin: 0;padding: 0;}
        #div1{width: 1600px;height: 300px;background: red; margin:100px auto;overflow: hidden;
            position: relative;}
        #div1 ul{position: absolute;left:0;}
        #div1 ul li{float: left;list-style-type: none;overflow: hidden;left: 0;
            top:0;}
        input{font-size: 20px;border: 2px solid blue;background-color: aliceblue;margin-left: 800px;}
        #div2{width: 1600px;height: 300px;}
    </style>
    <script>
        window.onload=function () {
            var oDiv1=document.getElementById('div1');
            var oUl=oDiv1.getElementsByTagName('ul')[0];
            var oLi=oDiv1.getElementsByTagName('li');
            var input1=document.getElementsByTagName('input')[0];
            var input2=document.getElementsByTagName('input')[1];
            var moue=-2;
            //在图片后面再加上一次
            oUl.innerHTML=oUl.innerHTML+oUl.innerHTML;
            oUl.style.width=oLi[0].offsetWidth*oLi.length+'px';
            function move() {
                if(oUl.offsetLeft<-oUl.offsetWidth/2){
                    oUl.style.left='0';
                }else if(oUl.offsetLeft>0){
                    oUl.style.left=-oUl.offsetWidth/2+'px';
                }
                oUl.style.left=oUl.offsetLeft+moue+'px';
            }

            var tem=setInterval(move,10)
            oDiv1.onmouseover=function () {
                clearInterval(tem);
            }
            oDiv1.onmouseout=function () {
                tem=setInterval(move,10)
            }
            //向左按钮
            input1.onclick=function () {
                moue=-6;
            }
            //向右按钮
            input2.onclick=function () {
                moue=6;
            }
        }
    </script>
</head>
<body>
    <div id="div1">
        <ul>
            <li><img src="img/m1.jpg"></li>
            <li><img src="img/m2.jpg"></li>
            <li><img src="img/m3.jpg"></li>
            <li><img src="img/m4.jpg"></li>
            <li><img src="img/m5.jpg"></li>
            <li><img src="img/m6.jpg"></li>
            <li><img src="img/m7.jpg"></li>
            <li><img src="img/m8.jpg"></li>
        </ul>

    </div>
    <div id="div2">
        <input type="button" value="向左滚动"/>
        <input type="button" value="向右滚动"/>
    </div>
</body>
</html>