Move a point dynamically

[Justin Fail]

Hi All,
Just undertaking some research here.
Trying to figure out if there is a method of dynamically moving a point on
the map WITHOUT requiring a full map image refresh.
I stumbled across the iBoatTrack sample a while ago and that did pretty much
what I'm looking for. I know that I could use SVG to perform this task, but
are there are other methods via mapscript or javascript that could perform this?
Cheers,
Justin