WordPress: Fijar botón Publicar/Actualizar

Código

function custom_admin_js() {
	$jQ = '$=jQuery;'.
		'$("#major-publishing-actions").css({'.
			'position:"fixed",'.
			'right:0,'.
			'bottom:$("#wpfooter").height()+15,'.
			'"z-index":2000,'.
			'"border":"solid 1px #ccc",'.
			'"border-width":"1px 0 1px 1px",'.
			'"box-shadow":"3px 3px 6px"'.
		'});';
    echo '"<script type="text/javascript">'.$jQ.'</script>"';
}
add_action('admin_footer', 'custom_admin_js');