--- index.js	2014-09-20 15:28:36.145759285 +0200
+++ weather.js	2014-09-20 16:30:03.097727473 +0200
@@ -1,170 +1,174 @@
 // weather.js - APIs for openweathermap.org
 (function(){
 
-	var config = {
-		city : 'Fairplay',
-		units : 'metric',
-		lan : 'it',
-		format : 'json',
-		APPID : null,
-
-	};
-
-
-	// main settings
-	var http = require('http');
-	var options = {
-		host : 'api.openweathermap.org',
-		path: '/data/2.5/weather?q=fairplay'
-	};
-
-
-	// exports(set)  --------------------------------------------  exports(set)  ---------------------------------------------
-	exports.setLang = function(lang){
-		config.lan = lang.toLowerCase();
-	}
-
-	exports.setCity = function(city){
-		config.city = city.toLowerCase();
-	}
-
-	exports.setUnits = function(units){
-		config.units = units.toLowerCase();
-	}
-
-	exports.setAPPID = function(appid){
-		config.APPID = appid;
-	}
-
-	// export(get)  ---------------------------------------------  exports(get)  ---------------------------------------------
-	exports.getLang = function(){
-		return config.lan;
-	}
-
-	exports.getCity = function(){
-		return config.city;
-	}
-
-	exports.getUnits = function(){
-		return config.units;
-	}
-
-	exports.getFormat = function(){
-		return config.format;
-	}
-
-	exports.checkError = function(callback){
-		 checkErr(callback);
-	}
-
-	exports.getAPPID = function(){
-		return config.APPID;
-	}
-
-
-	// get Response by field (satusCode, )
-	exports.getResponseCode = function(callback){
-		getResponseBF('statusCode', callback);
-	}
-
-	// get temperature
-	exports.getTemperature = function(callback){
-		getTemp(callback);
-	}
-
-	// get the atmospheric pressure
-	exports.getPressure = function(callback){
-		getPres(callback);
-	}
-
-	exports.getHumidity = function(callback){
-		getHum(callback);
-	}
-
-	exports.getDescription = function(callback){
-		getDesc(callback);
-	}
-
-	exports.getAllWeather = function(callback){
-		getData(callback);
-	}
-
-	exports.getSmartJSON = function(callback){
-		getSmart(callback);
-	}
-
-	// active functions()  -------------------------------------  active functions()  --------------------------------------------
-
-	function getErr(callback){
-		// set new path to throw the http exception
-		options.path = 'timetocrash';
-		var request = http.get(options, function(){
-				return callback(err);
-		})
-	}
-
-	function getPres(callback){
-		getData(function(jsonObj){
-			return callback(jsonObj.main.pressure);
-		})
-	}
-
-	function getTemp(callback){
-		getData(function(jsonObj){
-			return callback(jsonObj.main.temp);
-		})
-	}
-
-	function getHum(callback){
-		getData(function(jsonObj){
-			return callback(jsonObj.main.humidity);
-		})
-	}
-
-	function getDesc(callback){
-		getData(function(jsonObj){
-
-			return callback((jsonObj.weather)[0].description);
-		})
-	}
-
-	function getSmart(callback){
-		getData(function(jsonObj){
-			var smartJSON = {};
-			smartJSON.temp = jsonObj.main.temp;
-			smartJSON.humidity = jsonObj.main.humidity;
-			smartJSON.pressure = jsonObj.main.pressure;
-			smartJSON.description = (jsonObj.weather)[0].description;
-			smartJSON.weathercode = ((jsonObj.weather[0]).id);
-			return callback(smartJSON);
-		})
-	}
-
-	function getResponseBF(field,callback){
-		var req = http.get(options, function(res){
-			res.on('data', function(){
-
-			});
-			return callback(res[field]);
-		})
-	}
-
-	function buildPath(){
-
-		return '/data/2.5/weather?q=' + config.city + '&units=' + config.units + '&lang=' + config.lan + '&APPID=' + config.APPID;
-
-	}
-
-	function getData(callback){
-		options.path = buildPath();
-		var req = http.get(options, function(res){
-			res.setEncoding('utf8');
-			res.on('data', function (chunk) {
-
-			  	return callback(JSON.parse(chunk));
-			});
-		});
-	}
+  var config = {
+    city : 'Fairplay',
+    units : 'metric',
+    lan : 'it',
+    format : 'json',
+    APPID : null,
+
+  };
+
+
+  // main settings
+  var http = require('http');
+  var options = {
+    host : 'api.openweathermap.org',
+    path: '/data/2.5/weather?q=fairplay'
+  };
+
+
+  // exports(set)  --------------------------------------------  exports(set)  ---------------------------------------------
+  exports.setLang = function(lang){
+    config.lan = lang.toLowerCase();
+  }
+
+  exports.setCity = function(city){
+    config.city = city.toLowerCase();
+  }
+
+  exports.setUnits = function(units){
+    config.units = units.toLowerCase();
+  }
+
+  exports.setAPPID = function(appid){
+    config.APPID = appid;
+  }
+
+  // export(get)  ---------------------------------------------  exports(get)  ---------------------------------------------
+  exports.getLang = function(){
+    return config.lan;
+  }
+
+  exports.getCity = function(){
+    return config.city;
+  }
+
+  exports.getUnits = function(){
+    return config.units;
+  }
+
+  exports.getFormat = function(){
+    return config.format;
+  }
+
+  exports.getError = function(callback){
+     getErr(callback);
+  }
+
+  exports.getAPPID = function(){
+    return config.APPID;
+  }
+
+
+  // get Response by field (satusCode, )
+  exports.getResponseCode = function(callback){
+    getResponseBF('statusCode', callback);
+  }
+
+  // get temperature
+  exports.getTemperature = function(callback){
+    getTemp(callback);
+  }
+
+  // get the atmospheric pressure
+  exports.getPressure = function(callback){
+    getPres(callback);
+  }
+
+  exports.getHumidity = function(callback){
+    getHum(callback);
+  }
+
+  exports.getDescription = function(callback){
+    getDesc(callback);
+  }
+
+  exports.getAllWeather = function(callback){
+    getData(callback);
+  }
+
+  exports.getSmartJSON = function(callback){
+    getSmart(callback);
+  }
+
+  // active functions()  -------------------------------------  active functions()  --------------------------------------------
+
+  function getErr(callback){
+    // set new path to throw the http exception
+    options.path = 'timetocrash';
+    var request = http.get(options, function(err,data){
+        return callback(err,data);
+    })
+  }
+
+  function getPres(callback){
+    getData(function(err,jsonObj){
+      return callback(err,jsonObj.main.pressure);
+    })
+  }
+
+  function getTemp(callback){
+    getData(function(err,jsonObj){
+      return callback(err,jsonObj.main.temp);
+    })
+  }
+
+  function getHum(callback){
+    getData(function(err,jsonObj){
+      return callback(err,jsonObj.main.humidity);
+    })
+  }
+
+  function getDesc(callback){
+    getData(function(err,jsonObj){
+
+      return callback((err,jsonObj.weather)[0].description);
+    })
+  }
+
+  function getSmart(callback){
+    getData(function(err,jsonObj){
+      var smartJSON = {};
+      smartJSON.temp = jsonObj.main.temp;
+      smartJSON.humidity = jsonObj.main.humidity;
+      smartJSON.pressure = jsonObj.main.pressure;
+      smartJSON.description = (jsonObj.weather)[0].description;
+      smartJSON.weathercode = ((jsonObj.weather[0]).id);
+      return callback(err,smartJSON);
+    })
+  }
+
+  function getResponseBF(field,callback){
+    var req = http.get(options, function(err,res){
+      res.on('data', function(){
+
+      });
+      return callback(err,res[field]);
+    })
+  }
+
+  function buildPath(){
+
+    return '/data/2.5/weather?q=' + config.city + '&units=' + config.units + '&lang=' + config.lan + '&APPID=' + config.APPID;
+
+  }
+
+  function getData(callback){
+    options.path = buildPath();
+    var req = http.get(options, function(res){
+      res.setEncoding('utf-8');
+      res.on('data', function (chunk) {
+
+          return callback(null, JSON.parse(chunk));
+      });
+
+      res.on('error', function(err){
+          return callback(err, null);
+      })
+    });
+  }