diff --git a/bower.json b/bower.json
index dd27700..101a5f6 100644
--- a/bower.json
+++ b/bower.json
@@ -16,6 +16,7 @@
   ],
   "dependencies": {
     "purescript-web-dom": "master",
+    "purescript-web-uievents": "master",
     "purescript-web-html": "master"
   }
 }
diff --git a/src/Web/CSSOM/MouseEvent.js b/src/Web/CSSOM/MouseEvent.js
new file mode 100644
index 0000000..b45f683
--- /dev/null
+++ b/src/Web/CSSOM/MouseEvent.js
@@ -0,0 +1,9 @@
+"use strict";
+
+exports.offsetX = function (e) {
+  return e.offsetX;
+};
+
+exports.offsetY = function (e) {
+  return e.offsetY;
+};
diff --git a/src/Web/CSSOM/MouseEvent.purs b/src/Web/CSSOM/MouseEvent.purs
new file mode 100644
index 0000000..f9f0eda
--- /dev/null
+++ b/src/Web/CSSOM/MouseEvent.purs
@@ -0,0 +1,10 @@
+module Web.CSSOM.MouseEvent
+  ( offsetX
+  , offsetY
+  ) where
+
+import Web.UIEvent.MouseEvent (MouseEvent)
+
+foreign import offsetX :: MouseEvent -> Int
+
+foreign import offsetY :: MouseEvent -> Int