code: function(layerContext, node) {
          var minScaleDenominator = parseFloat(this.getChildValue(node));
          if (minScaleDenominator > 0) {
              layerContext.maxScale = minScaleDenominator;
          }
      }
docs: Method: read_sld_MinScaleDenominator
  Read a sld:MinScaleDenominator node.
  
  Parameters:
  layerContext - {Object} An object representing a layer.
  node - {Element} An element node.