diff --git a/node/ip-poll.js b/node/ip-poll.js
index d512e10..6803b99 100644
--- a/node/ip-poll.js
+++ b/node/ip-poll.js
@@ -6,62 +6,62 @@ var exec = require('child_process').exec;
 var redisprefix = "ippoll:";
 
 var IpPoll = function(switchaddr, hostsaddr) {
-	var self = this;
+    var self = this;
 
-	var redisClient = redis.createClient();
-	var regexp = /\(([0-9]+) hosts* up\)/;
-	var nmap = "nmap -n -sP -T4 ";
+    var redisClient = redis.createClient();
+    var regexp = /\(([0-9]+) hosts* up\)/;
+    var nmap = "nmap -n -sP -T4 ";
 
-	redisClient.on("connect", function () {
-		console.log("connected to redis");
-		self.emit('ready');
-	});
+    redisClient.on("connect", function () {
+        console.log("connected to redis");
+        self.emit('ready');
+    });
 
-	this.pollCount = function() {
-		exec(nmap + "--min-hostgroup 10 " + hostsaddr, function (error, stdout, stderr) {
-			if(error == null) {
-				var matches = regexp.exec(stdout);
-				if(matches != null && matches.length == 2) {
-					var time = Date.now();
+    this.pollCount = function() {
+        exec(nmap + "--min-hostgroup 10 " + hostsaddr, function (error, stdout, stderr) {
+            if(error == null) {
+                var matches = regexp.exec(stdout);
+                if(matches != null && matches.length == 2) {
+                    var time = Date.now();
 
-					redisClient.zremrangebyscore('onlinecount', "-inf", time - 7*24*60*1000);
+                    redisClient.zremrangebyscore('onlinecount', "-inf", time - 7*24*60*1000);
 
-					var num = matches[1];
+                    var num = matches[1];
 
-					redisClient.zadd('onlinecount', time, time + "|" + num, function() {
-						self.emit('doneCount', num);
-					});
-				}
-			}
-		});
-	};
+                    redisClient.zadd('onlinecount', time, time + "|" + num, function() {
+                        self.emit('doneCount', num);
+                    });
+                }
+            }
+        });
+    };
 
-	this.pollState = function() {
-		exec(nmap + switchaddr, function (error, stdout, stderr) {
-			if(error == null) {
-				var matches = regexp.exec(stdout);
-				if(matches != null && matches.length == 2) {
-					self.emit('doneState', matches[1] == "1");
-				}
-			} else {
-				self.emit('doneState', "unknown");
-			}
-		});
-	};
+    this.pollState = function() {
+        exec(nmap + switchaddr, function (error, stdout, stderr) {
+            if(error == null) {
+                var matches = regexp.exec(stdout);
+                if(matches != null && matches.length == 2) {
+                    self.emit('doneState', matches[1] == "1");
+                }
+            } else {
+                self.emit('doneState', "unknown");
+            }
+        });
+    };
 
-	this.getHistory = function(start, end, callback) {
+    this.getHistory = function(start, end, callback) {
 
-		redisClient.zrangebyscore('onlinecount', "-inf", "+inf", function(err, replies) {
-			var data = [];
+        redisClient.zrangebyscore('onlinecount', "-inf", "+inf", function(err, replies) {
+            var data = [];
 
-			replies.forEach(function (reply, i) {
-				var line = reply.split('|');
-				data.push( { at: moment(parseInt(line[0])).format(), value: line[1] });
-			});
+            replies.forEach(function (reply, i) {
+                var line = reply.split('|');
+                data.push( { at: moment(parseInt(line[0])).format(), value: line[1] });
+            });
 
-			callback(data);
-		});
-	};
+            callback(data);
+        });
+    };
 };
 
 util.inherits(IpPoll, EventEmitter);