[Mapserver-users] Layer control in separate frame

[Steve McCrone]

Layer control in separate frame

Thanks to Steve Lime in directing me to the samples found in:
http://maps.dnr.state.mn.us/mapserver_demos/workshop
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In the "frames.html" I have added a left frame to perform the layer control.
It has a tree control for the user to toggle on/off the layers.

<frameset cols="150,*" onLoad="load_map_frame()">
  <frame name="left" scrolling="yes" target="rtop"
src="demoCheckboxLeftFrame.html">
  <frameset rows="82%,*">
    <frame src="blank.html" name="map_frame" marginwidth="5"
marginheight="5" scrolling="YES">
     <frame src="blank.html" name="query_frame" marginwidth="5"
marginheight="5" scrolling="YES">
  </frameset>
</frameset>

I retrieve ths imgext from the map frame -
ext = parent.map_frame.document.mapserv.imgext.value;

and then construct a string on-the-fly with the updated layers and current
imgext
example - http://localhost/frames.html?layer= + layers +
"&zoomsize=2&imgext=" + ext + "&. . . etc
and then update the map frame -
parent.map_frame.location.href = loc;//this updates the map frame with the
updated layers and keeps the scale the same

this works fine for the sample that uses frames.html
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Now I need to achieve the same thing using the frames_dhtml.html sample
(i.e.e using the dhtml rubber band zoom box), but it looks like I will have
to access different variables - not the hidden variable imgex.

Can't figure this one out!

Any help would be great - thanks!