<script type="text/javascript">
var i = 1; var n; function showImg() {if (document.getElementById('img').getAttribute("src") == "images/1.jpg") {
document.getElementById('img').setAttribute("src","images/2.jpg"); } else { document.getElementById('img').setAttribute("src","images/1.jpg"); } }function showImg1() {
document.getElementById('img').setAttribute("src", "images/" + i + ".jpg"); i++; if (i > 10) { i = 1; } } function show() { n=setInterval(showImg1, 500); }function show1() {
clearInterval(n); } </script></head>
<body> <img id="img" alt="" src="images/1.jpg" width="200" height="200" /> <input id="Button1" type="button" value="换图片" οnclick="showImg()" /> <input id="Button2" type="button" value="切图" οnclick="showImg1()" /> <input id="Button3" type="button" value="轮换" οnclick="show()" /> <input id="Button4" type="button" value="停止轮换" οnclick="show1()" /></body>
</html>