childnodes problem

Hi!
I'm really new to web programming. I've got the following code:
<div id = "divrow1" name="divrow1">
<tr id="row1.1" style="display=none;" name="row1.1">
<td>&nbsp;<img id= 'imgrow1.1' src='images/plus.gif' <onclick='changeVis("row1.1", 3);' > Welcome</td>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
</div>

It's all placed within a <table> tag.
div = document.getElementById("divrow1");
Why do I get zero for div.childNodes.length?
Thank you

To start with your structure is wrong.

You can't just stick <tr> elements inside a <div>.

To be strictly correct, you should have a <table> element followed by a <tbody> element and then your <tr> elements.

You need to propely close the structure obviously.

If you do not, you will get different responses depending on the browser you are using.