[mapserver-users] turn off layers

[Janosch.Skrobek at trier.de]

Hi everyone!

I'm sure this is a really easy problem but I've been trying to find a
solution for more than an hour now and I can't seem to get it working.

I have got 3 Layers which are STATUS OFF in the mapfile. So when I load
my Map in browse modus nothing is shown. When I check one of the
checkboxes and click "refresh" the layer appears (and also shows up in
the address-line of the browser). But when I uncheck it and refresh it
just won't turn off. When the page has reloaded the variable is still in
the address line and the checkbox is still checked ...

Can anyone tell me what I'm doing wrong?

I first load the map like this:
http://localhost/cgi-bin/mapserv.exe?root=/atkis&program=/cgi-bin/mapser
v.exe&map=/ms4w/apps/atkis/test1.map&mode=browse&zoom=1

My form looks like this (its basically a copy of the tutorial 2.2 -
template by Pericles S. Nacionales [in the tutorial it works just fine
but not in my map :(]):

<form name="mapserv" method="GET" action="[program]">

<!-- HIDDEN MAPSERVER CGI VARIABLES -->
    <input type="hidden" name="root" value="[root]" />
    <input type="hidden" name="program" value="[program]" />
    <input type="hidden" name="map" value="[map]" />
    <input type="hidden" name="imgext" value="[mapext]" />
    <input type="hidden" name="imgxy" value="[center]" />
    <input type="hidden" name="layers" value="[layers]" />
    <input type="hidden" name="zoom" value="[zoom]" />
<table width="600" border="0" align="center">
  <tr> 
    <td>
	<table width="400" border="1" align="center">
	  <tr>
	    <td colspan="3">Select Layers:
<!-- SPECIFY VECTOR LAYERS -->
	      <input type="checkbox" name="layer" value="nutz"
[nutz_check]> Nutzfl&auml;chen&nbsp;
	      <input type="checkbox" name="layer" value="vegetation"
[vegetation_check]> Wald &amp; Wasser &nbsp;
	      <input type="checkbox" name="layer" value="ausgleich"
[ausgleich_check]>Ausgleichsfl&auml;chen<br>

<!-- SPECIFY RASTER LAYERS -->
	      Select Background:
	      <select name="layer">
		<option value=" " [ _select]>No Background</option>
		<option value="dtk5g" [dtk5g_select]>
                  DTK5 Grundriss
                </option>
	      </select>
	    </td>
	  </tr>
	  <tr>
	    <td>

<!-- SPECIFY MAP MODE -->
	      <div align="center">Map Mode:<br>
		<select name="mode">
		  <option value="browse">Browse</option>
		  <option value="map">Map</option>
		</select>
	      </div>
	    </td>
	    <td>
<!-- FORM SUBMIT BUTTON -->
	      <div align="center">
		<input type="submit" name="submit" value="Refresh">
	      </div>
	    </td>
	    <td>
<!-- ZOOM/PAN CONTROLS -->
	      <div align="center">Map Control: <br>
		<select name="zoom">
		  <option value="4" [zoom_4_select]>Zoom In 4x</option>
		  <option value="3" [zoom_3_select]>Zoom In 3x</option>
		  <option value="2" [zoom_2_select]>Zoom In 2x</option>
		  <option value="1" [zoom_1_select]>Recenter</option>
		  <option value="-2" [zoom_-2_select]>Zoom Out
2x</option>
		  <option value="-3" [zoom_-3_select]>Zoom Out
3x</option>
		  <option value="-4" [zoom_-4_select]>Zoom Out
4x</option>
		</select>
	      </div>
	    </td>
	  </tr>
	  <tr>
<!-- DISPLAY THE MAPSERVER-CREATED MAP IMAGE -->
	    <td colspan="3" align="center" valign="top">
	      <input type="image" name="img" src="[img]" width="1024"
height="768" border="0" />
	    </td>
	  </tr>
	</table>
    </td>
  </tr>
</table>
</form>


Thank you for your help

Janosch

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