Passing lat/lon to URL

[Douglas K. Rand]

I'm working on a fairly simple map browser that I need to pass a
latitude and longitude to another URL. I've got the browser working
using mapserv with zoom in/out and pan/recenter. What I need to figure
out is how to have another button/selection labled "Select Location"
that will cause the user to be forwarded either to a URL like
"http://www.com/form?lat=47.899474?lon=-96,843673" or to filter a HTML
document changing [maplat] and [maplon] to the lat/lon.

I seem to be stuck on this, any suggestions would be welcome.

Thanks.