diff --git a/public/js/autosuggest.js b/public/js/autosuggest.js
index 066ea1b..22a36aa 100644
--- a/public/js/autosuggest.js
+++ b/public/js/autosuggest.js
@@ -13,164 +13,154 @@ provided that the following conditions are met:
 
 'use strict';
 
-function AutoSuggest(opt) {
-    if (typeof opt.inputElement === "undefined" || typeof opt.listElement === "undefined" || typeof opt.baseUrl === "undefined" || typeof opt.appendCallback === "undefined") {
-        return;
+class AutoSuggest {
+    constructor(opt) {
+        if (typeof opt.inputElement === "undefined" || typeof opt.listElement === "undefined" ||
+            typeof opt.baseUrl === "undefined" || typeof opt.appendCallback === "undefined") {
+            return;
+        }
+
+        this.input = document.getElementById(opt.inputElement);
+        this.input.autocomplete = "off";
+        this.list = document.getElementById(opt.listElement);
+        this.appendCallback = opt.appendCallback;
+        this.baseurl = opt.baseUrl;
+
+        this.input.addEventListener('keydown', event => this.doSelection(event), false);
+        this.input.addEventListener('keyup', event => this.onType(event), false);
     }
 
-    this.input = document.getElementById(opt.inputElement);
-    this.input.autocomplete = "off";
-    this.list = document.getElementById(opt.listElement);
-    this.appendCallback = opt.appendCallback;
-    this.baseurl = opt.baseUrl;
+    doSelection(event) {
+        if (typeof this.container === "undefined" || this.container.children.length === 0) {
+            return;
+        }
 
-    var self = this;
-    this.input.addEventListener('keydown', function(event) {
-        self.doSelection(event);
-    }, false);
-    this.input.addEventListener('keyup', function(event) {
-        self.onType(this, event);
-    }, false);
+        switch (event.keyCode) {
+            case 13: // Enter
+                event.preventDefault();
+                this.container.children[this.selectedIndex].click();
+                break;
+
+            case 38: // Arrow up
+            case 40: // Arrow down
+                event.preventDefault();
+                this.findSelectedElement().className = '';
+                this.selectedIndex += event.keyCode === 38 ? -1 : 1;
+                if (this.selectedIndex < 0) {
+                    this.selectedIndex = this.container.children.length - 1;
+                } else if (this.selectedIndex === this.container.children.length) {
+                    this.selectedIndex = 0;
+                }
+                let new_el = this.findSelectedElement().className = 'selected';
+                break;
+        }
+    };
+
+    findSelectedElement() {
+        return this.container.children[this.selectedIndex];
+    };
+
+    onType(event) {
+        if (event.keyCode === 13 || event.keyCode === 38 || event.keyCode === 40) {
+            return;
+        }
+
+        let tokens = event.target.value.split(/\s+/).filter(token => token.length >= 2);
+
+        if (tokens.length === 0) {
+            if (typeof this.container !== "undefined") {
+                this.clearContainer();
+            }
+            return false;
+        }
+
+        let request_uri = this.baseurl + '/suggest/?type=tags&data=' + window.encodeURIComponent(tokens.join(" "));
+        let request = new HttpRequest('get', request_uri, {}, this.onReceive, this);
+    };
+
+    onReceive(response, self) {
+        self.openContainer();
+        self.clearContainer();
+        self.fillContainer(response);
+    };
+
+    openContainer() {
+        if (this.container) {
+            if (!this.container.parentNode) {
+                this.input.parentNode.appendChild(this.container);
+            }
+            return this.container;
+        }
+
+        this.container = document.createElement('ul');
+        this.container.className = 'autosuggest';
+        this.input.parentNode.appendChild(this.container);
+        return this.container;
+    };
+
+    clearContainer() {
+        while (this.container.children.length > 0) {
+            this.container.removeChild(this.container.children[0]);
+        }
+    };
+
+    clearInput() {
+        this.input.value = "";
+        this.input.focus();
+    };
+
+    closeContainer() {
+        this.container.parentNode.removeChild(this.container);
+    };
+
+    fillContainer(response) {
+        this.selectedIndex = 0;
+
+        response.items.forEach((item, i) => {
+            let node = document.createElement('li');
+            let text = document.createTextNode(item.label);
+            node.jsondata = item;
+            node.addEventListener('click', event => {
+                this.appendCallback(event.target.jsondata);
+                this.closeContainer();
+                this.clearInput();
+            });
+            node.appendChild(text);
+            this.container.appendChild(node);
+            if (this.container.children.length === 1) {
+                node.className = 'selected';
+            }
+        });
+    };
 }
 
-AutoSuggest.prototype.doSelection = function(event) {
-    if (typeof this.container === "undefined" || this.container.children.length === 0) {
-        return;
+class TagAutoSuggest extends AutoSuggest {
+    constructor(opt) {
+        super(opt);
+        this.type = "tags";
     }
 
-    switch (event.keyCode) {
-        case 13: // Enter
-            event.preventDefault();
-            this.container.children[this.selectedIndex].click();
-            break;
+    fillContainer(response) {
+        if (response.items.length > 0) {
+            super.fillContainer.call(this, response);
+        } else {
+            let node = document.createElement('li')
+            node.innerHTML = "<em>Tag does not exist yet. Create it?</em>";
 
-        case 38: // Arrow up
-        case 40: // Arrow down
-            event.preventDefault();
-            this.findSelectedElement().className = '';
-            this.selectedIndex += event.keyCode === 38 ? -1 : 1;
-            if (this.selectedIndex < 0) {
-                this.selectedIndex = this.container.children.length - 1;
-            } else if (this.selectedIndex === this.container.children.length) {
-                this.selectedIndex = 0;
-            }
-            var new_el = this.findSelectedElement().className = 'selected';
-            break;
-    }
-};
+            node.addEventListener('click', event => {
+                this.createNewTag(response => this.appendCallback(response));
+                this.closeContainer();
+                this.clearInput();
+            });
 
-AutoSuggest.prototype.findSelectedElement = function() {
-    return this.container.children[this.selectedIndex];
-};
-
-AutoSuggest.prototype.onType = function(input, event) {
-    if (event.keyCode === 13 || event.keyCode === 38 || event.keyCode === 40) {
-        return;
-    }
-
-    var tokens = input.value.split(/\s+/).filter(function(token) {
-        return token.length >= 2;
-    });
-
-    if (tokens.length === 0) {
-        if (typeof this.container !== "undefined") {
-            this.clearContainer();
-        }
-        return false;
-    }
-
-    var request_uri = this.baseurl + '/suggest/?type=tags&data=' + window.encodeURIComponent(tokens.join(" "));
-    var request = new HttpRequest('get', request_uri, {}, this.onReceive, this);
-};
-
-AutoSuggest.prototype.onReceive = function(response, self) {
-    self.openContainer();
-    self.clearContainer();
-    self.fillContainer(response);
-};
-
-AutoSuggest.prototype.openContainer = function() {
-    if (this.container) {
-        if (!this.container.parentNode) {
-            this.input.parentNode.appendChild(this.container);
-        }
-        return this.container;
-    }
-
-    this.container = document.createElement('ul');
-    this.container.className = 'autosuggest';
-    this.input.parentNode.appendChild(this.container);
-    return this.container;
-};
-
-AutoSuggest.prototype.clearContainer = function() {
-    while (this.container.children.length > 0) {
-        this.container.removeChild(this.container.children[0]);
-    }
-};
-
-AutoSuggest.prototype.clearInput = function() {
-    this.input.value = "";
-    this.input.focus();
-};
-
-AutoSuggest.prototype.closeContainer = function() {
-    this.container.parentNode.removeChild(this.container);
-};
-
-AutoSuggest.prototype.fillContainer = function(response) {
-    var self = this;
-    this.selectedIndex = 0;
-    response.items.forEach(function(item, i) {
-        var node = document.createElement('li');
-        var text = document.createTextNode(item.label);
-        node.jsondata = item;
-        node.addEventListener('click', function(event) {
-            self.appendCallback(this.jsondata);
-            self.closeContainer();
-            self.clearInput();
-        });
-        node.appendChild(text);
-        self.container.appendChild(node);
-        if (self.container.children.length === 1) {
+            this.container.appendChild(node);
+            this.selectedIndex = 0;
             node.className = 'selected';
         }
-    });
-};
+    };
 
-
-function TagAutoSuggest(opt) {
-    AutoSuggest.prototype.constructor.call(this, opt);
-    this.type = "tags";
-}
-
-TagAutoSuggest.prototype = Object.create(AutoSuggest.prototype);
-
-TagAutoSuggest.prototype.constructor = TagAutoSuggest;
-
-TagAutoSuggest.prototype.fillContainer = function(response) {
-    if (response.items.length > 0) {
-        AutoSuggest.prototype.fillContainer.call(this, response);
-    } else {
-        var node = document.createElement('li')
-        node.innerHTML = "<em>Tag does not exist yet. Create it?</em>";
-
-        var self = this;
-        node.addEventListener('click', function(event) {
-            self.createNewTag(function(response) {
-                self.appendCallback(response);
-            });
-            self.closeContainer();
-            self.clearInput();
-        });
-
-        self.container.appendChild(node);
-        this.selectedIndex = 0;
-        node.className = 'selected';
+    createNewTag(callback) {
+        let request_uri = this.baseurl + '/suggest/?type=createtag';
+        let request = new HttpRequest('post', request_uri, 'tag=' + encodeURIComponent(this.input.value), callback, this);
     }
-};
-
-TagAutoSuggest.prototype.createNewTag = function(callback) {
-    var request_uri = this.baseurl + '/suggest/?type=createtag';
-    var request = new HttpRequest('post', request_uri, 'tag=' + encodeURIComponent(this.input.value), callback, this);
 }