* Registers a function to be called whenever a style changes its state in the\r
* editing area. The current state is passed to the function. The possible\r
* states are {@link CKEDITOR.TRISTATE_ON} and {@link CKEDITOR.TRISTATE_OFF}.\r
* Registers a function to be called whenever a style changes its state in the\r
* editing area. The current state is passed to the function. The possible\r
* states are {@link CKEDITOR.TRISTATE_ON} and {@link CKEDITOR.TRISTATE_OFF}.\r