window.opener error

[janise]

Hello gurus!
I am trying to atleast understand why I am having the error that I am having so I can beging to isolate the problems.
The error says:

window.opener.top is null or is not an object.
Can someone please tell me what this means?

 

[mwolf00]

This could mean that there is no window.opener (meaning the code exists on a page that wasn't opened by code on a previous page)

OR

it could mean that the window.opener is the top node and has no "top" (meaning that is isn't part of a framset)

Programming today is a race between software engineers striving to build better and bigger idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. - Rick Cook (No, I'm not Rick)

 

[janise]

thank you mwolf00 for the response.
On one page, I have this snip:

function getNumber() {
found = false;
proj_num = document.control_form.proj_num_input.value.toUpperCase();
for ( i=0; i < document.control_form.length; i++ ) {
if (document.control_form.elements.name == proj_num) {
found = true;
}
}
if (found == true) {
extent = eval(&quot;document.control_form.&quot;+proj_num+&quot;.value&quot;
zoomToExtent(extent);
}
else {
alert(&quot;No such project.&quot;
}
}

On another, I have this:

function zoomToExtent(extent, token) {


setLayers(window.opener.top);
opener.top.body_frame.left_frame.document.mapserv.target = &quot;left_frame&quot;;
opener.top.body_frame.left_frame.document.mapserv.mapext.value = extent;
//opener.top.body_frame.left_frame.document.mapserv.map_sstreet_class_expression.value = &quot;'&quot;+token+&quot;'&quot;;
setTemplate(&quot;map.html&quot;,window.opener.top);
setMapSize(window.opener.top);
opener.top.body_frame.left_frame.document.mapserv.submit();
//top.body_frame.left_frame.document.mapserv.mapext.value = basin_extent;


self.close();

}


When I run the first page, I get the error I posted above pointing to:
setLayers(window.opener.top);

Could it be that I am getting this error because
function zoomToExtent(extent, token)has two parameters while the calling page this --> zoomToExtent(extent) has one?

Please assist