Custom classes in the editor and mce_options

Hello again!

I’ customizing a theme, and I wanted to add some classes to the editor so it’d be easier to use them. I wanted to do something similar to what was done in the “Freshy 2” theme (Mainly because i knew it worked), but when I tried to implement it I realized that mce_options is deprecated.

The code of freshy goes like this:

add_filter("mce_buttons", "freshy_editor_mce_buttons", 0);
add_action("mce_options", "freshy_editor_mce_options", 0);

if (!class_exists('Nice_theme')) add_action('wp_head','freshy_head');

function freshy_editor_mce_options() {
	print 'content_css:"';bloginfo('stylesheet_directory');print '/content.css",';
}

Any idea how I should modify it so it works?

Thanks in advance!