我做了一个图片自动切换的测试 结果不成功 不知道那里有错误 可否帮看看 程序如下：
<html> <head> </head> <body>
<table align=center width="237">
<tr>
<td>
<table width="99%" height="100%" border="0" cellspacing="0" cellspadding="0">
<tr> <td colspan="6">
<font size="6">
<div id="b2bContent" style="filter: revealTrans(Duration=1,Transition=23); width: 100%; height: 162px;"> </div> </font>
</td> </tr>
<tr> <td align="center" style='cursor:hand'> <font size=2> <div class="b2bbutton" id="bt0" onclick="javascript:showPage(0); clearTimeout(theTimer); theTimer=setTimeout('turnPage()',speed); checkBt();">1 </div> </font> </td>
<td align="center" style='cursor:hand'> <font size=2> <div class="b2bbutton" id="bt1" onclick="javascript:showPage(1); clearTimeout(theTimer); theTimer=setTimeout('turnPage()',speed); checkBt();">2 </div> </font> </td>
<td align="center" style='cursor:hand'> <font size=2> <div class="b2bbutton" id="bt2" onclick="javascript:showPage(2);
