diff --git a/experiments/modern/src/runtime/Button.js b/experiments/modern/src/runtime/Button.js
index a7a180f5..54841fa5 100644
--- a/experiments/modern/src/runtime/Button.js
+++ b/experiments/modern/src/runtime/Button.js
@@ -7,7 +7,7 @@ class Button extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassname() {
     return "Button";
   }
 }
diff --git a/experiments/modern/src/runtime/Container.js b/experiments/modern/src/runtime/Container.js
index 6acef794..b6a6c250 100644
--- a/experiments/modern/src/runtime/Container.js
+++ b/experiments/modern/src/runtime/Container.js
@@ -8,7 +8,7 @@ class Container extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "Container";
   }
   getlayout(id) {
diff --git a/experiments/modern/src/runtime/Group.js b/experiments/modern/src/runtime/Group.js
index 8249a0bd..081c4070 100644
--- a/experiments/modern/src/runtime/Group.js
+++ b/experiments/modern/src/runtime/Group.js
@@ -7,7 +7,7 @@ class Group extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "Group";
   }
   getobject(id) {
diff --git a/experiments/modern/src/runtime/GuiObject.js b/experiments/modern/src/runtime/GuiObject.js
index f66fb228..d73d613b 100644
--- a/experiments/modern/src/runtime/GuiObject.js
+++ b/experiments/modern/src/runtime/GuiObject.js
@@ -13,7 +13,7 @@ class GuiObject extends MakiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "GuiObject";
   }
   findobject(id) {
@@ -52,17 +52,17 @@ class GuiObject extends MakiObject {
   }
 
   gettop() {
-    unimplementedWarning('gettop');
+    unimplementedWarning("gettop");
     return 5;
   }
 
   getheight() {
-    unimplementedWarning('getheight');
+    unimplementedWarning("getheight");
     return 100;
   }
 
   getwidth() {
-    unimplementedWarning('getwidth');
+    unimplementedWarning("getwidth");
     return 100;
   }
 
diff --git a/experiments/modern/src/runtime/JsElements.js b/experiments/modern/src/runtime/JsElements.js
index d771eaa0..516858c4 100644
--- a/experiments/modern/src/runtime/JsElements.js
+++ b/experiments/modern/src/runtime/JsElements.js
@@ -7,7 +7,7 @@ class JsElements extends MakiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassname() {
     return "Elements";
   }
 }
diff --git a/experiments/modern/src/runtime/JsGammaSet.js b/experiments/modern/src/runtime/JsGammaSet.js
index 411c8302..e32948d6 100644
--- a/experiments/modern/src/runtime/JsGammaSet.js
+++ b/experiments/modern/src/runtime/JsGammaSet.js
@@ -7,7 +7,7 @@ class JsGammaSet extends MakiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "GammaSet";
   }
 }
diff --git a/experiments/modern/src/runtime/JsGroupDef.js b/experiments/modern/src/runtime/JsGroupDef.js
index 397483c9..db0c9a4f 100644
--- a/experiments/modern/src/runtime/JsGroupDef.js
+++ b/experiments/modern/src/runtime/JsGroupDef.js
@@ -7,7 +7,7 @@ class JsGroupDef extends MakiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassname() {
     return "GroupDef";
   }
 }
diff --git a/experiments/modern/src/runtime/Layer.js b/experiments/modern/src/runtime/Layer.js
index 3e941a59..77e563d8 100644
--- a/experiments/modern/src/runtime/Layer.js
+++ b/experiments/modern/src/runtime/Layer.js
@@ -7,7 +7,7 @@ class Layer extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "Layer";
   }
 }
diff --git a/experiments/modern/src/runtime/Layout.js b/experiments/modern/src/runtime/Layout.js
index af29b29a..b9986d3f 100644
--- a/experiments/modern/src/runtime/Layout.js
+++ b/experiments/modern/src/runtime/Layout.js
@@ -8,11 +8,11 @@ class Layout extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "Layout";
   }
   getcontainer() {
-    return findParentNodeOfType(this, ["container"]);;
+    return findParentNodeOfType(this, ["container"]);
   }
 
   resize(x, y, w, h) {
diff --git a/experiments/modern/src/runtime/List.js b/experiments/modern/src/runtime/List.js
index 3b39b64e..b8d380b9 100644
--- a/experiments/modern/src/runtime/List.js
+++ b/experiments/modern/src/runtime/List.js
@@ -7,7 +7,7 @@ class List extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "List";
   }
 }
diff --git a/experiments/modern/src/runtime/MakiObject.js b/experiments/modern/src/runtime/MakiObject.js
index 66eb4b75..7a3f09ea 100644
--- a/experiments/modern/src/runtime/MakiObject.js
+++ b/experiments/modern/src/runtime/MakiObject.js
@@ -19,8 +19,8 @@ class MakiObject {
         },
         // ugly but works for now
         name: this.constructor.name.toLowerCase(),
-        type: 'element'
-      }
+        type: "element",
+      };
     }
   }
 
@@ -68,7 +68,7 @@ class MakiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "Object";
   }
 
diff --git a/experiments/modern/src/runtime/PopupMenu.js b/experiments/modern/src/runtime/PopupMenu.js
index c6696f32..ebd80f82 100644
--- a/experiments/modern/src/runtime/PopupMenu.js
+++ b/experiments/modern/src/runtime/PopupMenu.js
@@ -8,20 +8,20 @@ class PopupMenu extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "PopupMenu";
   }
   addcommand(txt, id, checked, disabled) {
-    unimplementedWarning('addcommand');
+    unimplementedWarning("addcommand");
   }
   addseparator() {
-    unimplementedWarning('addseparator');
+    unimplementedWarning("addseparator");
   }
   checkcommand(id, check) {
-    unimplementedWarning('checkcommand');
+    unimplementedWarning("checkcommand");
   }
   popatmouse() {
-    unimplementedWarning('popatmouse');
+    unimplementedWarning("popatmouse");
   }
 }
 
diff --git a/experiments/modern/src/runtime/Slider.js b/experiments/modern/src/runtime/Slider.js
index 44bba6ef..24ae01f7 100644
--- a/experiments/modern/src/runtime/Slider.js
+++ b/experiments/modern/src/runtime/Slider.js
@@ -7,7 +7,7 @@ class Slider extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getClassName() {
+  getclassaname() {
     return "Slider";
   }
 }
diff --git a/experiments/modern/src/runtime/Status.js b/experiments/modern/src/runtime/Status.js
index 4aa2b9e1..110b9721 100644
--- a/experiments/modern/src/runtime/Status.js
+++ b/experiments/modern/src/runtime/Status.js
@@ -7,7 +7,7 @@ class Status extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "Status";
   }
 }
diff --git a/experiments/modern/src/runtime/System.js b/experiments/modern/src/runtime/System.js
index c4532d74..4b4c8c3f 100644
--- a/experiments/modern/src/runtime/System.js
+++ b/experiments/modern/src/runtime/System.js
@@ -8,7 +8,7 @@ class System extends MakiObject {
 
     this.scriptGroup = scriptGroup;
     this.root = scriptGroup;
-    while(this.root.parent) {
+    while (this.root.parent) {
       this.root = this.root.parent;
     }
   }
@@ -19,7 +19,7 @@ class System extends MakiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "System";
   }
 
@@ -37,11 +37,11 @@ class System extends MakiObject {
     return "5.666";
   }
   gettoken(str, separator, tokennum) {
-    unimplementedWarning('gettoken');
+    unimplementedWarning("gettoken");
     return "Some Token String";
   }
   getparam() {
-    unimplementedWarning('getparam');
+    unimplementedWarning("getparam");
     return "Some String";
   }
   messagebox(message, msgtitle, flag, notanymoreId) {
@@ -51,22 +51,22 @@ class System extends MakiObject {
     return value.toString();
   }
   getprivateint(section, item, defvalue) {
-    unimplementedWarning('getprivateint');
+    unimplementedWarning("getprivateint");
     return defvalue;
   }
   setprivateint(section, item, defvalue) {
-    unimplementedWarning('setprivateint');
+    unimplementedWarning("setprivateint");
   }
   getleftvumeter() {
-    unimplementedWarning('getleftvumeter');
+    unimplementedWarning("getleftvumeter");
     return 0.5;
   }
   getrightvumeter() {
-    unimplementedWarning('getrightvumeter');
+    unimplementedWarning("getrightvumeter");
     return 0.5;
   }
   getvolume() {
-    unimplementedWarning('getvolume');
+    unimplementedWarning("getvolume");
     return 1;
   }
 }
diff --git a/experiments/modern/src/runtime/Text.js b/experiments/modern/src/runtime/Text.js
index 826381b2..8c87a58e 100644
--- a/experiments/modern/src/runtime/Text.js
+++ b/experiments/modern/src/runtime/Text.js
@@ -7,7 +7,7 @@ class Text extends GuiObject {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "Text";
   }
 }
diff --git a/experiments/modern/src/runtime/ToggleButton.js b/experiments/modern/src/runtime/ToggleButton.js
index c4e3ade6..3bb62faa 100644
--- a/experiments/modern/src/runtime/ToggleButton.js
+++ b/experiments/modern/src/runtime/ToggleButton.js
@@ -7,7 +7,7 @@ class ToggleButton extends Button {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "ToggleButton";
   }
 }
diff --git a/experiments/modern/src/runtime/WinampAbstractionLayer.js b/experiments/modern/src/runtime/WinampAbstractionLayer.js
index 8ac71c6e..3494ce57 100644
--- a/experiments/modern/src/runtime/WinampAbstractionLayer.js
+++ b/experiments/modern/src/runtime/WinampAbstractionLayer.js
@@ -8,7 +8,7 @@ class WinampAbstractionLayer extends Group {
    * Returns the class name for the object.
    * @ret The class name.
    */
-  static getclassname() {
+  getclassaname() {
     return "WinampAbstractionLayer";
   }
 }
diff --git a/experiments/modern/src/utils.js b/experiments/modern/src/utils.js
index 668f12a3..ae81fd60 100644
--- a/experiments/modern/src/utils.js
+++ b/experiments/modern/src/utils.js
@@ -1,6 +1,4 @@
 import { xml2js } from "xml-js";
-const JsElements = require("./runtime/JsElements");
-const JsGroupDef = require("./runtime/JsGroupDef");
 
 export function getCaseInsensitveFile(zip, filename) {
   // TODO: Escape `file` for rejex characters
@@ -108,8 +106,10 @@ export function findParentNodeOfType(node, type) {
   let n = node;
   while (n.parent) {
     n = n.parent;
-    if ((!Array.isArray(type) && n.xmlNode.name === type) ||
-        (Array.isArray(type) && type.includes(n.xmlNode.name))) {
+    if (
+      (!Array.isArray(type) && n.xmlNode.name === type) ||
+      (Array.isArray(type) && type.includes(n.xmlNode.name))
+    ) {
       return n;
     }
   }
@@ -121,12 +121,14 @@ export function findDescendantByTypeAndId(node, type, id) {
   }
 
   const idLC = id.toLowerCase();
-  for(let i = 0; i < node.children.length; i++) {
+  for (let i = 0; i < node.children.length; i++) {
     const child = node.children[i];
-    if ((!type || child.xmlNode.name === type) &&
-        (child.xmlNode.attributes !== undefined &&
-         child.xmlNode.attributes.id !== undefined &&
-         child.xmlNode.attributes.id.toLowerCase() === idLC)) {
+    if (
+      (!type || child.xmlNode.name === type) &&
+      (child.xmlNode.attributes !== undefined &&
+        child.xmlNode.attributes.id !== undefined &&
+        child.xmlNode.attributes.id.toLowerCase() === idLC)
+    ) {
       return child;
     }
   }
@@ -173,7 +175,7 @@ function findInLexicalScope(node, pred) {
 // return the first child of an <Elements> that matches id
 export function findElementById(node, id) {
   return findInLexicalScope(node, child => {
-    if (child instanceof JsElements) {
+    if (child.getclassname && child.getclassname() === "Elements") {
       const element = findDirectDescendantById(child, id);
       if (element) {
         return element;
@@ -185,7 +187,11 @@ export function findElementById(node, id) {
 // Search up the tree for a <GroupDef> node that is in node's lexical scope and matches id.
 export function findGroupDefById(node, id) {
   return findInLexicalScope(node, child => {
-    if (child instanceof JsGroupDef && child.xmlNode.attributes.id === id) {
+    if (
+      child.getclassname &&
+      child.getclassname() === "GroupDef" &&
+      child.xmlNode.attributes.id === id
+    ) {
       return child;
     }
   });