​x
 
<html>
<head>
<script type="text/javascript">
cc=0
function changeimage()
{
if (cc==0) 
{
cc=1
document.getElementById('myimage').src="/i/eg_bulbon.gif"
}
else
{
cc=0
document.getElementById('myimage').src="/i/eg_bulboff.gif"
}
}
</script>
</head>
​
<body>
​
<img id="myimage" onclick="changeimage()" 
border="0" src="/i/eg_bulboff.gif" 
width="100" height="180" />
<p>请点击这个灯泡，把它点亮吧！</p>
​
</body>
</html>
​