[texhax] \marginpar on both/changing margins

[Alex Scorpan]

Is there a way to send some \marginpar's to the left margin and some  
to the right, on the same page?
That is, explicitly instruct LaTeX to place a specified \marginpar to  
the left, and a specified other to the right?
As in:  be able to implement a \marginparright and a \marginparleft,  
or some such.

Note that \reversemarginpars and \normalmarginpars seem to only work  
per page.
Also note that the cute \marginpar[left text]{right text} also does  
not address this:  it gobbles one of the two texts.

Thanks,

Alex