Usage

Horizontal-Bottom:
<tabbox orient="horizontal-bottom">
Vertical-Right:
<tabbox orient="vertical-right">

Updated

Top: (same as horizontal)

 
  <tabbox orient="top">

Left: (same as vertical)

 
  <tabbox orient="left">

Bottom:

 
  <tabbox orient="bottom">

Right:

 
  <tabbox orient="right">