diff --git a/mindplot/src/main/javascript/DesignerKeyboard.js b/mindplot/src/main/javascript/DesignerKeyboard.js
index ab9c4281..fa36b5ea 100644
--- a/mindplot/src/main/javascript/DesignerKeyboard.js
+++ b/mindplot/src/main/javascript/DesignerKeyboard.js
@@ -266,7 +266,7 @@ mindplot.DesignerKeyboard = new Class({
                     // If a modifier is press, the key selected must be ignored.
                     var pressKey = String.fromCharCode(keyCode);
                     if (event.ctrlKey || event.altKey || event.metaKey || event.shiftKey) {
-                        pressKey = "";
+                        return;
                     }
                     nodes[0].showTextEditor(pressKey);
                     event.stopPropagation();
diff --git a/mindplot/src/main/javascript/libraries/bootstrap/BootstrapDialog.js b/mindplot/src/main/javascript/libraries/bootstrap/BootstrapDialog.js
index 87676f52..b42750f7 100644
--- a/mindplot/src/main/javascript/libraries/bootstrap/BootstrapDialog.js
+++ b/mindplot/src/main/javascript/libraries/bootstrap/BootstrapDialog.js
@@ -92,7 +92,6 @@ var BootstrapDialog = new Class({
 
     setContent: function(content) {
         var modalBody = this._native.find('.modal-body');
-        modalBody.empty();
         modalBody.append(content);
     },
 
diff --git a/mindplot/src/main/javascript/libraries/mootools/mootools-core-1.4.5-full-nocompat-yc.js b/mindplot/src/main/javascript/libraries/mootools/mootools-core-1.4.5-full-nocompat-yc.js
index 949f4530..6007c52b 100644
--- a/mindplot/src/main/javascript/libraries/mootools/mootools-core-1.4.5-full-nocompat-yc.js
+++ b/mindplot/src/main/javascript/libraries/mootools/mootools-core-1.4.5-full-nocompat-yc.js
@@ -44,6 +44,22 @@
         }
         return typeof i;
     };
+    this.instanceOf = function (t, i) {
+        if (t == null) {
+            return false;
+        }
+        var s = t.$constructor || t.constructor;
+        while (s) {
+            if (s === i) {
+                return true;
+            }
+            s = s.parent;
+        }
+        if (!t.hasOwnProperty) {
+            return false;
+        }
+        return t instanceof i;
+    };
     var f = this.Function;
     var p = true;
     for (var k in {toString: 1}) {
@@ -232,6 +248,16 @@
             return this;
         }
     });
+    var l = function (i) {
+        switch (o(i)) {
+            case"array":
+                return i.clone();
+            case"object":
+                return Object.clone(i);
+            default:
+                return i;
+        }
+    };
     Array.implement("clone", function () {
         var s = this.length, t = new Array(s);
         while (s--) {