Undo plugin

hey everyone,

Is there any way that I can call "undo" from javascript? I want to add some script here to prevent "editable" from growing its height! Acctually, I want to set a maximum height for this div. Is that possible?

<div id="editable" contenteditable="true">
    <h1>Inline Editing in Action!</h1>
    <p>The div element that contains this text is now editable.
</div>
<script>
    // Turn off automatic editor creation first.
    CKEDITOR.disableAutoInline = true;
    CKEDITOR.inline( 'editable' );
</script>