Openbox window snapping

<!--
  Add this to your openbox rc.xml
  inside <keyboard></keyboard>

  +-------+-------+   +---------------+
  | ALT+q | ALT+e |   |     ALT+w     |
  +-------+-------+   +---------------+
  | ALT+z | ALT+c |   |     ALT+x     |
  +-------+-------+   +---------------+

  +-------+-------+   +---------------+
  |       |       |   |               |
  | ALT+a | ALT+d |   |     ALT+s     |
  |       |       |   |               |
  +-------+-------+   +---------------+
                         SHIFT+ALT+s
                         to minimize

  I've configures these bindings to my
  personal preference, changing them is
  not very hard. Just change
  <keybind key="m-y-k-e-y-s">
  to
  <keybind key="y-o-u-r-k-e-y-s">
-->

<keybind key="A-a">
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <width>50%</width>
    <height>100%</height>
    <x>0%</x>
    <y>0%</y>
  </action>
</keybind>
<keybind key="A-d">
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <width>50%</width>
    <height>100%</height>
    <x>50%</x>
    <y>0%</y>
  </action>
</keybind>
<keybind key="A-x">
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <width>100%</width>
    <height>50%</height>
    <x>0%</x>
    <y>50%</y>
  </action>
</keybind>
<keybind key="A-w">
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <width>100%</width>
    <height>50%</height>
    <x>0%</x>
    <y>0%</y>
  </action>
</keybind>
<keybind key="A-q">
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <width>50%</width>
    <height>50%</height>
    <x>0%</x>
    <y>0%</y>
  </action>
</keybind>
<keybind key="A-e">
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <width>50%</width>
    <height>50%</height>
    <x>50%</x>
    <y>0%</y>
  </action>
</keybind>
<keybind key="A-z">
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <width>50%</width>
    <height>50%</height>
    <x>0%</x>
    <y>50%</y>
  </action>
</keybind>
<keybind key="A-c">
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <width>50%</width>
    <height>50%</height>
    <x>50%</x>
    <y>50%</y>
  </action>
</keybind>
<keybind key="A-s">
  <action name="Maximize"/>
</keybind>
<keybind key="A-S-s">
  <action name="Iconify"/>
</keybind>