diff --git a/demo/anijs.html b/demo/anijs.html
index dc6f933b0..da92bebe3 100644
--- a/demo/anijs.html
+++ b/demo/anijs.html
@@ -10,15 +10,15 @@
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <title>AniJS demo</title>
 
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" />
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" />
     <link rel="stylesheet" href="../dist/gridstack.css"/>
-    <link rel="stylesheet" href="//anijs.github.io/lib/anicollection/anicollection.css" />
+    <link rel="stylesheet" href="https://anijs.github.io/lib/anicollection/anicollection.css" />
 
 
-    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
 
     <style type="text/css">
@@ -51,7 +51,7 @@ <h4>Widget added</h4>
         </div>
     </div>
 
-    <script src="//cdnjs.cloudflare.com/ajax/libs/AniJS/0.9.3/anijs.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/AniJS/0.9.3/anijs.js"></script>
     <script type="text/javascript">
         $(function () {
             $('.grid-stack').gridstack();
diff --git a/demo/float.html b/demo/float.html
index 5a2edfceb..aa809e3c8 100644
--- a/demo/float.html
+++ b/demo/float.html
@@ -10,13 +10,13 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>Float grid demo</title>
 
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
     <link rel="stylesheet" href="../dist/gridstack.css"/>
 
-    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
 
     <style type="text/css">
diff --git a/demo/knockout.html b/demo/knockout.html
index 327018ddd..8a2ae1964 100644
--- a/demo/knockout.html
+++ b/demo/knockout.html
@@ -10,14 +10,14 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>Knockout.js demo</title>
 
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
     <link rel="stylesheet" href="../dist/gridstack.css"/>
 
-    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
     <script src="../dist/gridstack.js"></script>
 
     <style type="text/css">
diff --git a/demo/knockout2.html b/demo/knockout2.html
index 3fccde335..f28d7bf0f 100644
--- a/demo/knockout2.html
+++ b/demo/knockout2.html
@@ -10,14 +10,14 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>Knockout.js demo</title>
 
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
     <link rel="stylesheet" href="../dist/gridstack.css"/>
 
-    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
     <script src="../dist/gridstack.js"></script>
 
     <style type="text/css">
diff --git a/demo/nested.html b/demo/nested.html
index 3bcdedd6c..34d1aa788 100644
--- a/demo/nested.html
+++ b/demo/nested.html
@@ -10,13 +10,13 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>Nested grids demo</title>
 
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
     <link rel="stylesheet" href="../dist/gridstack.css"/>
 
-    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
 
     <style type="text/css">
diff --git a/demo/responsive.html b/demo/responsive.html
index b9f184081..9dff6fee9 100644
--- a/demo/responsive.html
+++ b/demo/responsive.html
@@ -10,14 +10,14 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>Responsive grid demo</title>
 
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
     <link rel="stylesheet" href="../dist/gridstack.css"/>
     <link rel="stylesheet" href="../dist/gridstack-extra.css"/>
 
-    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
 
     <style type="text/css">
diff --git a/demo/rtl.html b/demo/rtl.html
index 3bd096fb8..a46069254 100644
--- a/demo/rtl.html
+++ b/demo/rtl.html
@@ -10,14 +10,14 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>RTL demo</title>
 
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
     <link rel="stylesheet" href="../dist/gridstack.css"/>
 
-    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
     <script src="../dist/gridstack.js"></script>
 
     <style type="text/css">
diff --git a/demo/serialization.html b/demo/serialization.html
index 0da49e674..539be56d0 100644
--- a/demo/serialization.html
+++ b/demo/serialization.html
@@ -10,13 +10,13 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>Serialization demo</title>
 
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
     <link rel="stylesheet" href="../dist/gridstack.css"/>
 
-    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
 
     <style type="text/css">
diff --git a/demo/two.html b/demo/two.html
index 25fd5a61b..71eba3212 100644
--- a/demo/two.html
+++ b/demo/two.html
@@ -10,14 +10,14 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>Two grids demo</title>
 
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
     <link rel="stylesheet" href="../dist/gridstack.css"/>
     <link rel="stylesheet" href="../dist/gridstack-extra.css"/>
 
-    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
 
     <style type="text/css">