diff --git a/src/Libraries/Web/Html/Element.cs b/src/Libraries/Web/Html/Element.cs
index e1379a913..1e6bcdfdd 100644
--- a/src/Libraries/Web/Html/Element.cs
+++ b/src/Libraries/Web/Html/Element.cs
@@ -411,6 +411,10 @@ public ElementAttribute GetAttributeNode(ElementAttributeName name) {
             return null;
         }
 
+        public ClientRect GetBoundingClientRect() {
+            return null;
+        }
+
         public ClientRectList GetClientRects() {
             return null;
         }
diff --git a/src/Libraries/Web/Html/ElementEvent.cs b/src/Libraries/Web/Html/ElementEvent.cs
index 68dd09c33..c14f8272e 100644
--- a/src/Libraries/Web/Html/ElementEvent.cs
+++ b/src/Libraries/Web/Html/ElementEvent.cs
@@ -38,6 +38,20 @@ public bool CancelBubble {
             }
         }
 
+        [ScriptField]
+        public int ClientX {
+            get {
+                return 0;
+            }
+        }
+
+        [ScriptField]
+        public int ClientY {
+            get {
+                return 0;
+            }
+        }
+
         [ScriptField]
         public bool CtrlKey {
             get {
@@ -101,6 +115,20 @@ public int OffsetY {
             }
         }
 
+        [ScriptField]
+        public int PageX {
+            get {
+                return 0;
+            }
+        }
+
+        [ScriptField]
+        public int PageY {
+            get {
+                return 0;
+            }
+        }
+
         [ScriptField]
         public bool ReturnValue {
             get {
@@ -110,6 +138,20 @@ public bool ReturnValue {
             }
         }
 
+        [ScriptField]
+        public int ScreenX {
+            get {
+                return 0;
+            }
+        }
+
+        [ScriptField]
+        public int ScreenY {
+            get {
+                return 0;
+            }
+        }
+
         [ScriptField]
         public bool ShiftKey {
             get {
@@ -152,6 +194,14 @@ public string Type {
             }
         }
 
+        [ScriptField]
+        public int WheelDelta
+        {
+            get {
+                return 0;
+            }
+        }
+
         public void PreventDefault() {
         }
 
diff --git a/src/Libraries/Web/Html/ImageElement.cs b/src/Libraries/Web/Html/ImageElement.cs
index 3e46da8e7..3a266dba2 100644
--- a/src/Libraries/Web/Html/ImageElement.cs
+++ b/src/Libraries/Web/Html/ImageElement.cs
@@ -38,6 +38,16 @@ public bool Complete {
             }
         }
 
+        [ScriptField]
+        public string CrossOrigin
+        {
+            get {
+                return null;
+            }
+            set {
+            }
+        }
+
         [ScriptField]
         public string Src {
             get {