L.YahooTileLayer = function(url, options) { var tileLayer = new L.TileLayer(url, options); tileLayer.getTileUrl = function (tilePoint) { var zoom = this._getZoomForUrl(); var shift = zoom - 1; var x = tilePoint.x; var y = Math.pow(2, shift) - 1 - tilePoint.y; this._adjustTilePoint(tilePoint); return L.Util.template(this._url, L.Util.extend({ s: this._getSubdomain(tilePoint), z: zoom + 1, x: x, y:
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