[OSM-talk] Slippymap Question

[Bone Killian]

I have been trying to follow the directions on "Deploying your own 
slippymap" but I do not understand the openlayers syntax.  The wiki 
article says to look at the informationfreeway source, which I have 
done.  Perhaps I am dense, but I can't make my slippymap work.

Can anyone explain this to me?

layerTilesAtHome = new OpenLayers.Layer.TMS( 
		"tiles at home (direct)", 
		"http://tah.dev.openstreetmap.org/Tiles/tile/",
		{type:'png', getURL: get_osm_url, displayOutsideMaxExtent: true } );



I gather that we're creating a new TMS layer (What is TMS?). 
We give it a name "tiles at home (direct)"
We point it to the folder with all the tiles in it.
What does this last line mean?  Are there multiple possible kinds of TMS 
layers?  What is a MaxExtent?  What does getURL do?



Thanks,
Bone