How to draw gizmos before OnSceneGUI?

Hi all, While making map editor I've faced a problem of OnSceneGUI() Z-ordering: ![alt text][1] I draw grid in OnDrawGizmos(), howerer buttons are rendered in Custom Editor script in OnSceneGUI() using Handles.BeginGUI(). How to draw buttons after grid? Thanks [1]: http://forum.unity3d.com/attachment.php?attachmentid=67122&d=1378983693