add_filter('mce_buttons_3','my_buttons');
function my_buttons($buttons){
	$mces=array(
		'cut',
		'copy',
		'paste',
		'image',
		'code',
		'hr',
		'fontselect',
		'fontsizeselect',
		'styleselect',
		'sub',
		'sup',
		'backcolor',
		'visualaid',
		'anchor',
		'newdocument',
	);
	foreach($mces as $mce){
		$buttons[]=$mce;
	}
	return $buttons;
}