<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<body>
<script>
function changeImage() {
element = document.getElementById('myimage');
if (element.src.match("bulbon")) {
element.src = "./images/pic_bulboff.gif";
} else {
element.src = "./images/pic_bulbon.gif";
}
}
</script>
<img id="myimage" onclick="changeImage()" border="0" src="./images/pic_bulboff.gif" width="100" height="180">
<p>点击灯泡 开/关 灯</p>
</body>
</html>
