[ 'barLabel_top', function () {
                           var fs = getFontSize( this.target.width() - 2*this.target.lineWidth() - 5 );
                           return (  (this.target.height() > fs + 2*fs / minWidthRatio) && (fs > minFontSize)  ) ?
                                  this.target.top() + fs/minWidthRatio :
                                  this.target.top() - (fs + fs / (2*minWidthRatio) + this.target.lineWidth());
                         }],