Keyboard support

[klihelp]

Hi,

Can you please add keyboard support option.
It would be useful for the slideshow.

// Add support for left and right arrow keys
$(document).keydown(function(event){

    switch(event.which) {
        // case :
        case 37:
        // LEFT
            $slideshow.imagemax('prev');
            break;

        case 39:
        // RIGHT
            $slideshow.imagemax('next');
            break;

        default: return; // allow other keys to be handled
    }

    // prevent default action (eg. page moving up/down)
    // but consider accessibility (eg. user may want to use keys to choose a radio button)
    event.preventDefault();
});