var ma={
  structures:{
    massGIS:L.tileLayer('http://170.63.206.116/tiles/Basemaps_Structures/{z}/{y}/{x}.png',{minZoom:16}),
    massDOT:L.tileLayer('http://services.massdot.state.ma.us/ArcGIS/rest/services/GeneralPurpose/Structures/MapServer/tile/{z}/{y}/{x}',{minZoom:12,maxZoom:18})
  },
  roads:{
    massDOT:L.tileLayer('http://services.massdot.state.ma.us/ArcGIS/rest/services/RoadInventory/Roads/MapServer/tile/{z}/{y}/{x}',{minZoom:5,maxZoom:18})
  },
  parcels:{
    massGIS:L.tileLayer('http://170.63.206.116/tiles/Basemaps_L3Parcels/{z}/{y}/{x}.png',{minZoom:16})
  },
  functional:{
    structures:L.tileLayer.functional(function(view){
      var zeros = '00000000';
      var x = view.tile.row.toString(16);
      var y = view.tile.column.toString(16);
      return [
        'http://170.63.206.116/arcgiscache/Basemaps_Structures/Layers/_alllayers/L',
        view.zoom<10?"0"+view.zoom:view.zoom,
        '/R',
        zeros.slice(x.length),
        x,
        '/C',
        zeros.slice(y.length),
        y,
        '.png'
      ].join("");
    },{minZoom:16}),
    parcels:L.tileLayer.functional(function(view){
      var zeros = '00000000';
      var x = view.tile.row.toString(16);
      var y = view.tile.column.toString(16);
      return [
        'http://170.63.206.116/arcgiscache/Basemaps_L3Parcels/Layers/_alllayers/L',
        view.zoom<10?"0"+view.zoom:view.zoom,
        '/R',
        zeros.slice(x.length),
        x,
        '/C',
        zeros.slice(y.length),
        y,
        '.png'
      ].join("");
    }),
    baseMap:L.tileLayer.functional(function(view){
      var zeros = '00000000';
      var x = view.tile.row.toString(16);
      var y = view.tile.column.toString(16);
      return [
        'http://170.63.206.116/arcgiscache/Basemaps_MassGISBasemapNoLabels1/Layers/_alllayers/L',
        view.zoom<10?"0"+view.zoom:view.zoom,
        '/R',
        zeros.slice(x.length),
        x,
        '/C',
        zeros.slice(y.length),
        y,
        '.jpg'
      ].join("");
    }),
    labels:L.tileLayer.functional(function(view){
      var zeros = '00000000';
      var x = view.tile.row.toString(16);
      var y = view.tile.column.toString(16);
      return [
        'http://170.63.206.116/arcgiscache/Basemaps_MassGISBasemapWithLabels2/Layers/_alllayers/L',
        view.zoom<10?"0"+view.zoom:view.zoom,
        '/R',
        zeros.slice(x.length),
        x,
        '/C',
        zeros.slice(y.length),
        y,
        '.png'
      ].join("");
    }),
  }
}