Can't build gxine without libmozjs

I'm trying to build the latest Gxine from source (since the package that 
ships with Ubuntu Karmic is painfully buggy.)  But I've run into a show 
stopper.

It seems there's a problem with the libmozjs-dev package, which cannot 
be installed without removing Firefox.  Not a problem, I figure, since 
all I want for Christmas is a working, stand-alone dvd and vob file player.

I try:

./configure  --without-browser-plugin --without-spidermonkey 
--disable-mozjs --disable-ffjs --disable-seajs  --disable-deprecated

But configure still exits with:

configure: using path -Ino for spidermonkey
checking for jsapi.h... no
configure: error: libjs not found

Is there something more than I can do? or another Front End you can 
suggest?  (Kaffeine no longer even lets you configure or enable 
de-interlacing, and Xine UI tends to lock up X when scrolling dialogue 
choices in the Configuration UI, a problem that I've had with all 
versions since 2007!, not to mention that I can't find where to 
configure it's de-interlacing to use pulldown/film mode)


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