[mapserver-users] Mapplet - Force Zoomdir with image buttons

[Marco Catellani]

Hi all.

I'm using MapServer 3.6 with Mapplet Extension.

The question involves zoomdir value. Using classical interface with radio
button (coupled with the [zoomdir_-1|0|1_check] special character) the
application run correctly.

I'm trying to use image buttons instead of radio buttons to obtain the same
result. What I need is that clicking the image the zoomdir value change
correctly.

I'm using code like this:

function ZoominSub(){
  document.mapserv.zoomdir.value = "1";
}

<input type="hidden" name="zoomdir" value="">
<a href="#" onClick="zoomin();">
<img src="http://localhost/images/zoomin.gif" alt="Zoom in"></a>

but I don't get what I want; in fact when I click the image and then I click
over the map the result is a pan operation, not a zoomin one.

Do you have any suggestion or advise?

Thank you very much!

Marco