There is a work around, but put the emphasis on work. I have used this before in the past ... what you do is put HTML comments around the code tags, and make a link to your post. Of course, you have to post first to find out what node number your post will be. Here is an example: SPOILER

and here is the text that made that possible:

<!--
<code>
secret message here
</code>
-->
<a href="/?node_id=266841&displaytype=displaycode">SPOILER</a>

I like the idea of a spoiler tag ... maybe instead of investigating CSS solutions, we should create a new displaytype. That way a new page is loaded, user setting colors won't matter.

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)