51help TIY
码：
<html> <head> <script type="text/javascript"> function bgChange(bg) { document.getElementById('x').style.background="url(" + bg + ")" } </script> </head> <body> <p>颜色。</p> <p>变：</p> <table width="300" height="100"> <tr> <td onmouseover="bgChange('/i/eg_bg_03.gif')" background="../i/eg_bg_03.gif" tppabs="http://www.51help.tk/i/eg_bg_03.gif"> </td> <td onmouseover="bgChange('/i/eg_bg_04.gif')" background="../i/eg_bg_04.gif" tppabs="http://www.51help.tk/i/eg_bg_04.gif"> </td> </tr> </table> <form> ： <input id="x" type="checkbox" checked value="ON"> </form> </body> </html>
查看结果: