Is it possiible to update location right after image is uploaded?

Hi,

I hope this is the right place to ask this question.

I am working on a site where users can upload pictures and assign location info to them. The location of the picture is then shown on a googlemap. In case the image holds geo-information in the gps_gpslongitude and gps_gpslatitude fields, i dont want the user to enter it manually, but immediately show the location on a map.

To upload the pictures, i use the imageField widget in CCK. I also use the gmap and location module, and the EXIF Location module to update the location fields.

The gps fields are read correctly from the image and it all works fine, but only after the node has been submitted (insert or update both work). What i'd like to achieve though, is that as soon as the image finished uploading, and the widget shows the thumb, the location data in the node/add form is updated and this location is shown on the gmap.

How could i achieve this goal? Is this possible in the standard node/add form, or would i need to make a custom form using the form-api?

Any suggestions would be very welcome!

Thanks