I am changing the styleclass(commandExButtonDisabled) of a button when it is Disable. Now in IE when the button is Enable the letters of the button is White and when disable the letters of the button becomes gery according to the styleclass. But in Mozilla firefox the letter of the button is always grey this means all the time the commandExButtonDisabled class is active. I would appreciate if someone can give me the solution so that it works similarly in Firefox like it works in IE successfully now. Thanks.