: Re: Zooom/Pan interface using gif images rather than radio buttons

[Jonathan Candy]

So you do not want to use Javascript or Java, but want to avoid checkboxes 
or radio buttons ?
If you are a Windows user with IIS, you can use ASP  VBScript to determine 
which GIF was clicked and then execute a mapserv command.
For example, if your HTML form has 2 gifs named zoomin and zoomout, your asp 
code has:

zoominpick = Request("zoomin.x")  'zoom in
zoomoutpick = Request("zoomout.x") ' zoom out
if (zoominpick > 0 ) then
  draw = "ZOOM_IN"
end if
if (zoomoutpick > 0 ) then
  draw = "ZOOM_OUT"
end if

You cannot create a zoom box, but your program can handle pans, zooms, and 
any other requests.

You can do a 'mini-mapscript' type of program with VBScript and all the 
mapserv cgi variables + your own set of hidden variables. You will calculate 
a new map extent and other values before executing a mapserver URL.

http://www.georanger.com
is an example where I wanted to use mapserver with PDAs web browsers that 
have no java or javascript support.

regards,
Jonathan Candy








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