diff -r 633572e14095 -r 0f775bd8d210 javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/HTML5GraphicsEnvironment.java
--- a/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/HTML5GraphicsEnvironment.java	Mon May 27 14:13:01 2013 +0200
+++ b/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/HTML5GraphicsEnvironment.java	Sun Sep 08 10:58:10 2013 +0200
@@ -450,7 +450,6 @@
 
 //    @JavaScriptBody(args = {"path"}, body = "var b = new Image(); b.src=path; return b;")
 //    public native Image getImageForPathImpl(String path);
-
     @Override
     public int getHeight() {
         return canvas.getHeight();
@@ -473,4 +472,45 @@
 
     @JavaScriptBody(args = {"src"}, body = "var image = new Image(); image.src = src; return image;")
     private static native Object createImage(String src);
+
+    @Override
+    public int getWidth(Image image, Object nativeImage) {
+        if (nativeImage == null) {
+            nativeImage = createImage(image.getSrc());
+        }
+        return getWidth(nativeImage);
+    }
+
+    @JavaScriptBody(args = {"nativeImage"}, body = "return nativeImage.naturalWidth;")
+    private static native int getWidth(Object nativeImage);
+
+    @Override
+    public int getHeight(Image image, Object nativeImage) {
+        if (nativeImage == null) {
+            nativeImage = createImage(image.getSrc());
+        }
+        return getHeight(nativeImage);
+    }
+
+    @JavaScriptBody(args = {"nativeImage"}, body = "return nativeImage.naturalHeight;")
+    private static native int getHeight(Object nativeImage);
+
+    @Override
+    public Object mergeImages(Image a, Image b, Object cachedA, Object cachedB) {
+        return mergeImages(cachedA, cachedB);
+    }
+
+    @JavaScriptBody(args = {"img1", "img2"}, body = "var canvas = document.createElement('img');\n"
+            + "var context = canvas.getContext(\"2d\");\n"
+            + "var width = img1.width;\n"
+            + "var height = img1.height;\n"
+            + "canvas.width = width;\n"
+            + "canvas.height = height;\n"
+            + "context.drawImage(img1, 0, 0);\n"
+            + "context.drawImage(img2, 0, 0);\n"
+            + "url = canvas.toDataURL();\n"
+            + "var resultImage = document.createElement('img');\n"
+            + "resultImage.src=url;\n"
+            + "return resultImage;")
+    public static native Object mergeImages(Object img1, Object img2);
 }