I don't know why this thing fails in desktop Safari. I'm using Modernizr (which is bundled with the highly recommendedHTML5 Boilerplate) which reports that the Geolocation API is supported but I'm unable to even get any dialog asking the user for permission to geolocate (which is, if I read the draft correctly, REQUIRED to be implemented).
Also, it seems that others (quite a few people actually) have had this same problem but I have been unable to find a solution yet. Below is a snippet from the code; in desktop Safari the PositionErrorCallback (the latter cb function) gets called after timeout but no luck with PositionCallback, no matter how long the timeout value is. Other tested browsers work as expected.
Referenced in other places: