The forum all about the user-created online/offline sensory.
The sensor usually consists of a script that causes errors and a message. This works because on the offline viewer, a script stops if it's failed (usually due to incorrect calculations, i.e.: 0/0 (zero divide zero)), intending that, if uploaded, could mess with the site's severs etc.. But on the online viewer, it ignores failures (probably due that, if stopped, may possibly mess with the severs again etc.), and carries on scripts that offline, wouldn't work.
Offline