Toggles the closed caption display on and off. It is not visible if the caption parameter is not specified. You can use CSS to size, skin, and position this button relative to the control bar that contains it.
CSS properties of the main viewer area
The appearance of the button is controlled with the following CSS class selector:
Position from the top border, including padding.
Position from the right border, including padding.
Position from the left border, including padding.
Position from the bottom border, including padding.
Width of the button.
Height of the button.
The image that is displayed for a given button state.
Position inside artwork sprite, if CSS sprites are used.
This button supports the
attribute selector and selected attribute selectors, which can be used to apply different skins to different button states. In particular,
corresponds to the state when captions are visible and
is used when captions are hidden.
Example - to set up a closed caption button that is 28 x 28 pixels, positioned four pixels from the top and 68 pixels from the right edge of the control bar, and displays a different image for each of the four different button states when selected or not selected.