用代码制作的图片交替显现

代码：

<table height="600" cellpadding="0" width="900" background="图片地址" border="0">

<tbody>

<tr class="firstRow">

<td>

<div>

<marquee scrollamount="4" direction="down" width="900" height="600">

<marquee scrollamount="4" direction="up" width="900" height="600">

<img style="FILTER: alpha WIDTH: 900px; HEIGHT: 600px" height="600" alt="夕阳翁音画" src="图片地址" width="900">

</marquee>

</marquee>

</div>