$this->AssetRule->create();  
$this->AssetRule->action = 'admin_edit';  
$this->AssetRule->scripts = array('tiny_mce/tiny_mce');  
$this->AssetRule->codeblock = 'tinyMCE.init({  
    mode : "textareas",  
    theme : "advanced",  
    plugins : "media",  
    media_external_list_url : "media/list.js",  
    theme_advanced_buttons1 : "bold,italic,underline,separator,strikethrough,justifyleft,justifycenter,justifyright, justifyfull,bullist,numlist,undo,outdent,indent,redo,link,unlink",  
    theme_advanced_buttons2 : "",  
    theme_advanced_buttons3 : "",  
    theme_advanced_resizing : true,  
    theme_advanced_toolbar_location : "top",  
    theme_advanced_toolbar_align : "left",  
    theme_advanced_statusbar_location : "bottom",  
    extended_valid_elements : "a[name|href|target|title|onclick],img[class|src|border=0|alt|title|hspace|vspace|width|height|align|onmouseover|onmouseout|name],hr[class|width|size|noshade],font[face|size|color|style],span[class|align|style]"  
});';  
$this->AssetRule->runRule();