求教如何合并表格

[dxb_828]

求两个js 第一个能够使一个4行4列table中的第一行第一列和第二行第一列两个单元格合并,第二个能够使这个4行4列表格的第一行第一列与第一行第二列格子合并

[igyhi]

m

[LxcJie]

<table border=1 id=t1>
<tr><td>aaa</td><td>aaa</td><td>aaa</td><td>aaa</td></tr>
<tr><td>aaa</td><td>aaa</td><td>aaa</td><td>aaa</td></tr>
<tr><td>aaa</td><td>aaa</td><td>aaa</td><td>aaa</td></tr>
<tr><td>aaa</td><td>aaa</td><td>aaa</td><td>aaa</td></tr>
</table>
<P>
<table border=1 id=t2>
<tr><td>aaa</td><td>aaa</td><td>aaa</td><td>aaa</td></tr>
<tr><td>aaa</td><td>aaa</td><td>aaa</td><td>aaa</td></tr>
<tr><td>aaa</td><td>aaa</td><td>aaa</td><td>aaa</td></tr>
<tr><td>aaa</td><td>aaa</td><td>aaa</td><td>aaa</td></tr>
</table>
<script>
function fun1(){
var oTable = document.getElementById("t1");
var oTrList = oTable.rows;
oTrList[0].cells[0].colSpan = 2;
oTrList[0].cells[1].removeNode();
}
fun1()

function fun2(){
var oTable = document.getElementById("t2");
var oTrList = oTable.rows;
oTrList[0].cells[0].rowSpan = 2;
oTrList[1].cells[0].removeNode();
}
fun2()
</script>

IE ONLY....