我新建了一个层并且在新建层中建立了一个表格。代码如下
<div id="Layer1" style="filter:alpha(opacity=70);position:absolute; width:100px; height:100px; z-index:1; left: 160px; top: 0px;layer-background-color: white; border: 1px none #000000">
<table border="1" width="100%"><td width="100%"><p align="center"><font color="#FF0000">1234</font></td></table></div>
请问我想用JavaScript改变文字1234。需要怎么编写JavaScript代码？？？？？谢谢指教

[CODE]

<div id="Layer1" style="filter:alpha(opacity=70);position:absolute; width:100px; height:100px; z-index:1; left: 160px; top: 0px;layer-background-color: white; border: 1px none #000000"> <table border="1" width="100%"><td width="100%" align="center" id="tb"><font color="#FF0000">1234</font></td></table></div>

<script language="javascript"> var textout=new Array(); var now=new Date(); var i=0; textout[0]='<font color=blue><b>今日访问100</b></font>'; textout[1]='<font color=green>总访问1000</font>'; textout[2]='当前时间' + now.getHours() + ":" + now.getMinutes() + ":" + now.getSeconds();

function ChangeIt() { tb.innerHTML=textout[i]; i++; if(i==3) i=0;

setTimeout("ChangeIt()",3000); }

ChangeIt(); </script>

[/CODE]