Updating [minx], [maxx], [miny], [maxy] variables with Javascript

[Shanton, James A]

Is there a way I can update [minx], [maxx], [miny], [maxy] CGI template
variables with Javascript ?

I'm trying to implement image swapping with jbox.

Image swapping works the first time I zoom in, but the second time I zoom
in, the coordinates on the template are not updated.

I've tried hidden variables on the template and updating those, but I keep
getting NaN   and weird numbers like  -79.7097-6.31680 for longitude

Thanks !

Jim Shanton