Spoiler Text - Blackout

[Goshee]

Hello there

I want to add spoiler tags to my BBcode and WYSIWYG editor.

Though I was wondering if anyone knew how to get this effect as seen in the steam forums?

http://forums.steampowered.com/forums/showthread.php?t=1429282

I want the same effect where the text appears on roll over but goes back to black after moving your mouse away from it.

Much appreciated!

[mokujin]

The way I would do is add a new BBcode
BB Code Tag Name: spoiler
Replacement:<span style="color: rgb(0, 0, 0); background-color: rgb(0, 0, 0);" class="spoiler" onmouseover="this.style.color='#FFFFFF';" onmouseout="this.style.color=this.style.backgroundColor='#0000 00'">{param}</span>
Other fields you can add what you want

[Goshee]

You sir, are a Scholar and a Gentleman.

Thank you very much for a prompt, accurate and fully working response!