diff --git a/index.js b/index.js
index 7dca45f..cbc5273 100644
--- a/index.js
+++ b/index.js
@@ -1,26 +1,56 @@
 module.exports = {
 
+sub_ev: {}, // объект, хранящий событие
+
     /**
      * @param {String} event
      * @param {Object} subscriber
      * @param {Function} handler
      */
-    on: function (event, subscriber, handler) {
-
+    on: function (event, subscriber, handler) { 
+        if (subscriber == undefined){
+            return this;
+        }
+        if (!this.sub_ev.hasOwnProperty(event)){
+            this.sub_ev[event] = [];
+        }
+        this.sub_ev[event].push({
+            subscriber: subscriber,
+            handler: handler.bind(subscriber)
+        });
+        return this;
     },
 
     /**
      * @param {String} event
      * @param {Object} subscriber
      */
-    off: function (event, subscriber) {
-
+    off: function (event, subscriber) {          
+        if (!this.sub_ev.hasOwnProperty(event)){
+            return this;
+        } 
+        if (subscriber == undefined){ // почему ===
+            delete this.sub_ev[event];
+        }
+        else if (this.sub_ev.hasOwnProperty(event)){
+            for (var i = this.sub_ev[event].length - 1; i >= 0; --i){
+                if (this.sub_ev[event][i].subscriber === subscriber){
+                    this.sub_ev[event].splice(i, 1);
+                }
+            }
+        }
+        return this;
     },
 
     /**
      * @param {String} event
      */
     emit: function (event) {
-
+        if (this.sub_ev.hasOwnProperty(event) && this.sub_ev[event].length > 0){
+            for (var i = 0; i < this.sub_ev[event].length; i++){
+                this.sub_ev[event][i].handler();
+            }
+        }
+        return this;
     }
 };