W3School TIY
编辑您的代码：
<html> <head> <style> img { filter:alpha(opacity=10) } </style> <script type="text/javascript"> function clean() { interval=setInterval("makeclean(myImage)",10) } function foggy() { clearInterval(interval) document.getElementById('myImage').filters.alpha.opacity=10 } function makeclean() { if (document.getElementById('myImage').filters.alpha.opacity<100) { document.getElementById('myImage').filters.alpha.opacity+=5 } else if (window.interval) { clearInterval(interval) } } </script> </head> <body> <b>请把鼠标移动到图像链接上：</b><br /> <a href="../index.html"> <img border="0" id="myImage" src="../i/eg_smile.gif" onmouseover="clean()" onmouseout="foggy()" /> </a> </body> </html>
查看结果: