problem with zoom to selected object

[Tomasz Wlaz?owski]

 I try to obtain (in main map window) zoomed view to selected object from drop down list
 based on shape file.
 I'm wondering how obtain it using mapserver
 ver.4.01 + javascript?

 I use class_expression mode:
 <input type="hidden" name="layer" value="Qroads">
 <input type="hidden" name="map_Qroads_class_expression value = "[STREET]">
 <SELECT value="1" NAME="map_Qroads_class_expression"
 onchange="javascript:Doit();">
 <OPTION   value="none"> select street </OPTION>
 <OPTION   value="abc">street_A</OPTION>
 <OPTION   value="cde">street_B</OPTION>
 <OPTION   value="efg">street_C</OPTION>

 As You can see I have a layer named 'Qroads' and so far  I know how to
 pass to app ID value from [STREET] COLUMN to see selected object in main
 map. Next step that I need to do is pass its extends to obtain zoomed
 map to this object.

 Could any body give me some short instructions, ideas?


 Tomasz Wlazlowski

 wlazlowski at igpik.waw.pl









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