So until this feature gets added I create my own buttons, but for some reason the editor removes parameter values. Not sure if this some sanitation code that's removing these values, but it's annoying. If I edit the post and save it again it saves just fine.
Here's what I put in:
<div id="hideId2">
<button onclick="showHiddenContent('hideId2');">:D</button> <div id="hideId2Inner" style="display:none"> <object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/7yl3UMO-TkE"</param><param name="allowScriptAccess" value="always"></param><embed src="http://www.youtube.com/v/7yl3UMO-TkE?autoplay=1" type="application/x-shockwave-flash" allowfullscreen="false" allowscriptaccess="always" width="420" height="345"></embed></object> </div></div>Are wednesdays still an important day? I thought that situation was <em>deflated</em> a while ago. </p><div id="hideId2"><button onclick="">:D</button><div id="hideId2Inner" style="display:none"><object height="344" width="425"> <param name="movie" param="" value="about:blank" /> <param name="allowScriptAccess" value="always" /> <embed allowfullscreen="false" allowscriptaccess="always" height="344" src="about:blank" type="" width="425"></embed> </object></div></div>