multiple filled.contour() on single page

Hi,

It seems as if filled.contour can't be used along with layout(), or
par(mfrow) or the like, since it sets the page in a very particular
manner.  Someone posted a workaround
(http://r.789695.n4.nabble.com/several-Filled-contour-plots-on-the-same-device-td819040.html).
Has a better approach been developed for achieving this?  Thanks.

Cheers,

Seb