reorient 3d display with out mouse

Is there a command to reorient the 3d display back the 0,0 viewpoint
with out the moutse.  Actually with the mouse it is hard to get back to
the original view point.

Would this be a visad function?
Would it be a java 3d function?

Thanks

G. Garrett Campbell Ph. D.
Cooperative Institute for Research in the Atmosphere
Colorado State University
Ft. Collins, CO, USA
970 491 8497
campbell@xxxxxxxxxxxxxxxxxx