diff --git a/public/index.html b/public/index.html
index 5838608..e9dbe1e 100644
--- a/public/index.html
+++ b/public/index.html
@@ -63,159 +63,7 @@
 
 <script src="//cdnjs.cloudflare.com/ajax/libs/handlebars.js/2.0.0-alpha.1/handlebars.min.js"></script>
 <script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
-<script>
-    var access_token;
-    var refresh_token;
-    var error;
-    (function () {
-
-        /**
-         * Obtains parameters from the hash of the URL
-         * @return Object
-         */
-        function getHashParams() {
-            var hashParams = {};
-            var e, r = /([^&;=]+)=?([^&;]*)/g,
-                    q = window.location.hash.substring(1);
-            while (e = r.exec(q)) {
-                hashParams[e[1]] = decodeURIComponent(e[2]);
-            }
-            return hashParams;
-        }
-
-        Handlebars.registerHelper('list', function (items, options) {
-            var out = "<div class='list-group'>";
-
-            for (var i = 0, l = items.length; i < l; i++) {
-                out = out + options.fn(items[i]);
-            }
-
-            return out + "</div>";
-        });
-
-        var userProfileSource = document.getElementById('user-profile-template').innerHTML,
-                userProfileTemplate = Handlebars.compile(userProfileSource),
-                userProfilePlaceholder = document.getElementById('user-profile');
-
-        var playlistsSource = document.getElementById('playlists-template').innerHTML,
-                playlistsTemplate = Handlebars.compile(playlistsSource),
-                playlistsPlaceholder = document.getElementById('playlists');
-
-        var dupsSource = document.getElementById('dups-template').innerHTML,
-                dupsTemplate = Handlebars.compile(dupsSource),
-                dupsPlaceholder = document.getElementById('dups');
-
-        var params = getHashParams();
-
-        access_token = params.access_token;
-        refresh_token = params.refresh_token;
-        error = params.error;
-
-        if (error) {
-            alert('There was an error during the authentication');
-        } else {
-            if (access_token) {
-                $.ajax({
-                    url: 'https://api.spotify.com/v1/me',
-                    headers: {
-                        'Authorization': 'Bearer ' + access_token
-                    },
-                    success: function (response) {
-                        userProfilePlaceholder.innerHTML = userProfileTemplate(response);
-
-                        $('#login').hide();
-                        $('#loggedin').show();
-                    }
-                });
-            } else {
-                // render initial screen
-                $('#login').show();
-                $('#loggedin').hide();
-            }
-
-            document.getElementById('get-playlists').addEventListener('click', function () {
-                var currentElement = $(this);
-                currentElement.addClass('loading');
-                $.ajax({
-                    url: '/get_playlists',
-                    data: {
-                        'access_token': access_token
-                    }
-                }).done(function (data) {
-                    var pl = data.data.map(function (item) {
-                        return {
-                            pl_uid: item.owner.id,
-                            pl_name: item.name,
-                            pl_id: item.id
-                        }
-                    });
-
-                    currentElement.removeClass('loading');
-
-                    playlistsPlaceholder.innerHTML = playlistsTemplate({
-                        playlists: pl
-                    });
-                })
-            }, false);
-
-            $(document).on('click', '.pl_item', function (e) {
-                e.preventDefault();
-                var pl_name = $(this).text();
-                $('.pl_item').removeClass('active');
-                var currentElement = $(this);
-                currentElement.addClass('active');
-                currentElement.addClass('loading');
-                $('#dups').hide();
-                $.ajax({
-                    url: $(this).attr('href'),
-                    data: {
-                        'access_token': access_token
-                    }
-                }).done(function (data) {
-                    var dups = data.data.map(function (item) {
-                        return {
-                            dup_trackname: item.track.name,
-                            dup_artist: item.track.artists[0].name
-                        }
-                    });
-                    currentElement.removeClass('loading');
-                    if (data.data.length > 0) {
-                        dupsPlaceholder.innerHTML = dupsTemplate({
-                            dups: dups,
-                            pl_name: pl_name
-                        });
-                    }
-                    else {
-                        dupsPlaceholder.innerHTML = dupsTemplate({
-                            dups: [],
-                            message: "No duplicate found.",
-                            pl_name: pl_name
-                        });
-                    }
-                    $('#dups').show();
-                })
-            });
-
-            $(document).on('click', '#obtain-new-token', function () {
-                refreshToken();
-            });
-        }
-    })();
-
-    function refreshToken() {
-        var button = $('#obtain-new-token');
-        button.addClass('loading');
-        $.ajax({
-            url: '/refresh_token',
-            data: {
-                'refresh_token': refresh_token
-            }
-        }).done(function (data) {
-            access_token = data.access_token;
-            button.removeClass('loading');
-        });
-    }
-</script>
+<script src="./script.js"></script>
 </body>
 </html>
 
diff --git a/public/script.js b/public/script.js
new file mode 100644
index 0000000..890ca95
--- /dev/null
+++ b/public/script.js
@@ -0,0 +1,153 @@
+'use strict';
+
+var access_token;
+var refresh_token;
+var error;
+(function () {
+
+    /**
+     * Obtains parameters from the hash of the URL
+     * @return Object
+     */
+    function getHashParams() {
+        var hashParams = {};
+        var e, r = /([^&;=]+)=?([^&;]*)/g,
+            q = window.location.hash.substring(1);
+        while (e = r.exec(q)) {
+            hashParams[e[1]] = decodeURIComponent(e[2]);
+        }
+        return hashParams;
+    }
+
+    Handlebars.registerHelper('list', function (items, options) {
+        var out = "<div class='list-group'>";
+
+        for (var i = 0, l = items.length; i < l; i++) {
+            out = out + options.fn(items[i]);
+        }
+
+        return out + "</div>";
+    });
+
+    var userProfileSource = document.getElementById('user-profile-template').innerHTML,
+        userProfileTemplate = Handlebars.compile(userProfileSource),
+        userProfilePlaceholder = document.getElementById('user-profile');
+
+    var playlistsSource = document.getElementById('playlists-template').innerHTML,
+        playlistsTemplate = Handlebars.compile(playlistsSource),
+        playlistsPlaceholder = document.getElementById('playlists');
+
+    var dupsSource = document.getElementById('dups-template').innerHTML,
+        dupsTemplate = Handlebars.compile(dupsSource),
+        dupsPlaceholder = document.getElementById('dups');
+
+    var params = getHashParams();
+
+    access_token = params.access_token;
+    refresh_token = params.refresh_token;
+    error = params.error;
+
+    if (error) {
+        alert('There was an error during the authentication');
+    } else {
+        if (access_token) {
+            $.ajax({
+                url: 'https://api.spotify.com/v1/me',
+                headers: {
+                    'Authorization': 'Bearer ' + access_token
+                },
+                success: function (response) {
+                    userProfilePlaceholder.innerHTML = userProfileTemplate(response);
+
+                    $('#login').hide();
+                    $('#loggedin').show();
+                }
+            });
+        } else {
+            // render initial screen
+            $('#login').show();
+            $('#loggedin').hide();
+        }
+
+        document.getElementById('get-playlists').addEventListener('click', function () {
+            var currentElement = $(this);
+            currentElement.addClass('loading');
+            $.ajax({
+                url: '/get_playlists',
+                data: {
+                    'access_token': access_token
+                }
+            }).done(function (data) {
+                var pl = data.data.map(function (item) {
+                    return {
+                        pl_uid: item.owner.id,
+                        pl_name: item.name,
+                        pl_id: item.id
+                    }
+                });
+
+                currentElement.removeClass('loading');
+
+                playlistsPlaceholder.innerHTML = playlistsTemplate({
+                    playlists: pl
+                });
+            })
+        }, false);
+
+        $(document).on('click', '.pl_item', function (e) {
+            e.preventDefault();
+            var pl_name = $(this).text();
+            $('.pl_item').removeClass('active');
+            var currentElement = $(this);
+            currentElement.addClass('active');
+            currentElement.addClass('loading');
+            $('#dups').hide();
+            $.ajax({
+                url: $(this).attr('href'),
+                data: {
+                    'access_token': access_token
+                }
+            }).done(function (data) {
+                var dups = data.data.map(function (item) {
+                    return {
+                        dup_trackname: item.track.name,
+                        dup_artist: item.track.artists[0].name
+                    }
+                });
+                currentElement.removeClass('loading');
+                if (data.data.length > 0) {
+                    dupsPlaceholder.innerHTML = dupsTemplate({
+                        dups: dups,
+                        pl_name: pl_name
+                    });
+                }
+                else {
+                    dupsPlaceholder.innerHTML = dupsTemplate({
+                        dups: [],
+                        message: "No duplicate found.",
+                        pl_name: pl_name
+                    });
+                }
+                $('#dups').show();
+            })
+        });
+
+        $(document).on('click', '#obtain-new-token', function () {
+            refreshToken();
+        });
+    }
+})();
+
+function refreshToken() {
+    var button = $('#obtain-new-token');
+    button.addClass('loading');
+    $.ajax({
+        url: '/refresh_token',
+        data: {
+            'refresh_token': refresh_token
+        }
+    }).done(function (data) {
+        access_token = data.access_token;
+        button.removeClass('loading');
+    });
+}