code: function(px) {
          // initialize our internal div
          OpenLayers.Control.prototype.draw.apply(this, arguments);
          px = this.position;
  
          // place the controls
          this.buttons = [];
  
          var sz = {w: 18, h: 18};
          var centered = new OpenLayers.Pixel(px.x+sz.w/2, px.y);
  
          this._addButton("panup", "north-mini.png", centered, sz);
          px.y = centered.y+sz.h;
          this._addButton("panleft", "west-mini.png", px, sz);
          this._addButton("panright", "east-mini.png", px.add(sz.w, 0), sz);
          this._addButton("pandown", "south-mini.png", 
                          centered.add(0, sz.h*2), sz);
          this._addButton("zoomin", "zoom-plus-mini.png", 
                          centered.add(0, sz.h*3+5), sz);
          this._addButton("zoomworld", "zoom-world-mini.png", 
                          centered.add(0, sz.h*4+5), sz);
          this._addButton("zoomout", "zoom-minus-mini.png", 
                          centered.add(0, sz.h*5+5), sz);
          return this.div;
      }
docs: Method: draw
  
  Parameters:
  px - {<OpenLayers.Pixel>}
  
  Returns:
  {DOMElement} A reference to the container div for the PanZoom control.