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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY>
<table border="1" id="mytb">
</table>
<input type="button" value="add" onclick="add()">
<input type="button" value="del()" onclick="del()">
</BODY>
</HTML>
<script>
var i=0;
function add(){
var mytb=document.getElementById("mytb");
var newRow = mytb.insertRow();
i++;
var newTd0 = newRow.insertCell();
var newTd1 = newRow.insertCell();
var newTd2 = newRow.insertCell();
newTd0.innerHTML="<input type='checkbox' name='chbox'>";
newTd1.innerHTML=" "+i;
newTd2.innerHTML=" "+i;
}
function del(){
var chboxs = document.getElementsByName("chbox");
var mytb=document.getElementById("mytb");
for(var i=chboxs.length;i>0;i--){
var e=chboxs[i-1];
if(e.checked){
// 0
mytb.deleteRow(i-1);
}
}
}
</script>