code: function(bounds, borderColor, borderWidth) {
          this.bounds = bounds;
          this.div    = OpenLayers.Util.createDiv();
          this.div.style.overflow = 'hidden';
          this.events = new OpenLayers.Events(this, this.div);
          this.setBorder(borderColor, borderWidth);
      }
docs: Constructor: OpenLayers.Marker.Box
  
  Parameters:
  bounds - {<OpenLayers.Bounds>}
  borderColor - {String}
  borderWidth - {int}