top.opener doesn't work in Netscape

Hello,

I have a window that opens another window with two frames. From one of
the frames I'm trying to get elements of the opening window. This code
works well in IE but not in Netscape 4.79. The alert in link_onclick
never shows up, and image_onclick gives an error "top.opener has no
properties".

What am I doing wrong? Thanks.

Julia


<script>
function link_onclick() {
    if ( top.opener ) {
    alert("link_onclick");
        var loc = top.opener.location.href;
        var tit = top.opener.document.title;
        document.add_form.add.value =  ' <A HREF="' + loc + '">' + tit
+ '</A> ';
    }
    document.add_form.submit();
}

function image_onclick() {
   with ( top.opener.document ) {

***more code***
   }
}
</script>


This is the relevant HTML:

<form name="add_form" method=post action="WBedit.pl">
<p>
<table cellspacing=5>
<tr><td><input type=button name=add_link value="Add Link"
onclick="link_onclick();"></td>
<td>Add a link to currently open page.</td></tr>
<tr><td><input type=button name=add_image value="Add Image"
onclick="image_onclick();"></td>
<td>Add a picture from currently open page.</td></tr>
</table>
<input type=hidden name="add">
</form>