undecorate

#! /usr/bin/python2
from gtk.gdk import *

w=window_foreign_new((get_default_root_window().property_get("_NET_ACTIVE_WINDOW")[2][0]))
state = w.property_get("_NET_WM_STATE")[2]
maximized='_NET_WM_STATE_MAXIMIZED_HORZ' in state and '_NET_WM_STATE_MAXIMIZED_VERT' in state
if maximized: w.unmaximize()
if w.get_decorations() == 0 :
    w.set_decorations(DECOR_ALL)
else:
    w.set_decorations(0)

if maximized: w.maximize()
window_process_all_updates()