If you want to see keyboard shortcuts of your webpages
then do the flowing.
create userContent.css file in this location
if you have your own profile then make file there
or use default firefox profile.
win:
hit Start -> Run and type %appdata%\Mozilla\Firefox\Profiles
mac:
~/Library/Application Support/Firefox
then open that file using any text editor and pest this code:
a[accesskey]:after,
button[accesskey]:after,
input[accesskey]:after,
label[accesskey]:after,
legend[accesskey]:after,
textarea[accesskey]:after
{
margin-left: 0.3em;
content: "[" attr(accesskey) "]";
}
reload firefox enjoy :)
