Found a little quirk today when working on a plug-in.
It is a minor annoyance, but I thought I'd let you know anyway.
The HTML rendered by a call to "UI.Forms.SubmitButton" seems to include a trailing space in the class attribute as shown here:
<input type="submit" value="Save" class="dlgButton " chotkey="o" name="idSubmit"/>
The button still seems to look like the style is being applied (at least in FF)
Also, the style applied to these buttons doesn't change the mouse-pointer to a hand when hovering over the button. It would be nice if it did.
{cursor:pointer;}