> The SlippyMap extension requires a small change to the original OpenLayers
> code. At the very end of the file, it sets a variable to "true", so that the
> JavaScript can be loaded asynchronously. The part of the JavaScript that
> creates the map polls for these variables. If they are not yet set, the
> function calls itself using alarm() and a ~0.5s delay. Without this hack,
> the loading of the page would stall at the map in many browsers when using
> slow links or slow CPUs

Is this a bug the OpenLayers developers know about and might be fixed
in a future version of OpenLayers itself?