Detecting a mac platform?

Hi
can anyone tell me whether there is a way of detecting mac platforms
from one of the env variable or better yet using a similar method to
the user agent detection used when checking the browser type and
version provided with DW...

MTIA

Grunt
"In this world you can be either very very smart or very very pleasant. For
years I was smart.. I recommend pleasant". The wisdom of Elwood P. Dowd
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