Is there a way to add TinyMCE into my own WordPress plugin?

I have a textarea in my back end script and want to make this area into a TinyMCE WYSIWYG editable field. Is there a way to do that?

This code does not work for me:

<?php

    wp_tiny_mce(false,array(editor_selector => test));

?>

<textarea class=test id=test name=test></textarea>

It shows the javascript error

f is undefined

Firebug screenshot:

This didn't work either:

<textarea class=theEditor id=videogalerie-add_description name=videogalerie-add_description></textarea>