光棒效果：建立一个表格，鼠标放到哪一行，哪一行的颜色就改变，鼠标离开那一行，那一行的颜色就恢复到原来的颜色
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head> <body>
<table width="" border="" cellspacing="" cellpadding="">
<tr onmouseover="shangqu(this)" onmouseout="likai(this)" bgcolor="#FFFF66">
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
</tr>
<tr onmouseover="shangqu(this)" onmouseout="likai(this)" bgcolor="#FFFF66">
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
</tr>
<tr onmouseover="shangqu(this)" onmouseout="likai(this)" bgcolor="#FFFF66">
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
</tr>
<tr onmouseover="shangqu(this)" onmouseout="likai(this)" bgcolor="#FFFF66">
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
</tr>
<tr onmouseover="shangqu(this)" onmouseout="likai(this)" bgcolor="#FFFF66">
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
<td height=""> </td>
</tr>
</table>
</body>
<script type="text/javascript"> function shangqu(a)
{
a.style.backgroundColor="red";
}
function likai(b)
{
b.style.backgroundColor="#FFFF66";
}
</script> </html>