html5 implements createContextualFragment correctly and we relied on its bug,  https://bugzilla.mozilla.org/show_bug.cgi?id=521345
html5 implements createContextualFragment correctly and we relied on its bug, 
https://bugzilla.mozilla.org/show_bug.cgi?id=521345

http://code.google.com/p/fbug/source/detail?r=4543

firebug/tracing-console,firebug/tracing-console