How To Pass <table> Back To Parent

I'm spawning a child window from a parent. In the child I'm dynamically building a table. When I click "finished" I want the entire table to go back to the parent and replace the original table "shell" (an empty <table> </table> tag-pair).

Note: The table ID is the same at the parent and child. This allows the replacement to work repeatedly. The child window closes but I don't see the table on the parent.

I get the feeling I'm mixing DHTML and DOM (ie "window.opener....") and .. well, I don't know what to think.

Is it OK to nest DOM functions as shown in the code?

I've tried a couple of different things - I'd like to use "replaceNode", but the syntax is not clear in the reference I have.

[b]The problem{/b]
Below is the function triggered by the child window "finished" button's onclick event.

I suspect the variable assignment is wrong as an alert box immediately after it (removed in this sample) did not show up.

function finished() {
var oldReport = window.opener.document.getElementbyId('DBReportsTable');
oldReport.firstChild.removeNode(true); // the <tbody>
oldReport.appendChild(document.getElementById('DBReportsTable').firstChild);
window.close();
return true;
} // finished()