#resize
{
  position: absolute;
  width: 200px;
  height: 200px;
  border: 1px solid black;
}

#handle
{
  position: absolute;
  
  background-color: black;
  
  width: 10px;
  height: 10px;
  
  right: 0px;
  bottom: 0px;
}

#pane1
{
  position: absolute;
  
  background-color: red;
  
  width: 100%;
  height: 50%;
  
  top: 0px;
  left: 0px;
}

#pane2
{
  position: absolute;
  
  background-color: green;
  
  width: 50px;
  height: 50%;
  
  right: 0px;
  top: 0px;
}

#pane3
{
  position: absolute;
  
  background-color: blue;
  
  width: 100%;
  height: 50%;
  
  left: 0px;
  bottom: 0px;
}