diff -r 73ca07cfcf98 glass/glass-mat-lib-macosx/src/com/sun/mat/ui/GlassWindow.m
--- a/glass/glass-mat-lib-macosx/src/com/sun/mat/ui/GlassWindow.m	Tue Feb 14 10:06:29 2012 -0800
+++ b/glass/glass-mat-lib-macosx/src/com/sun/mat/ui/GlassWindow.m	Tue Feb 14 17:22:24 2012 -0500
@@ -16,7 +16,7 @@
 #import "GlassView.h"
 #import "GlassScreen.h"
 
-//#define VERBOSE
+#define VERBOSE
 #ifndef VERBOSE
     #define LOG(MSG, ...)
 #else
@@ -1701,17 +1701,25 @@
         if (image != nil)
         {
             GlassWindow *window = getGlassWindow(env, jPtr);
+            NSImageView *view = [[NSImageView alloc] initWithFrame: NSMakeRect (0, 0, 128, 128)];
+            NSDockTile  *tile = [NSApp dockTile];
+            
+            [view setImageFrameStyle:NSImageFrameNone];
+            [view setImageScaling:NSScaleToFit];
+            [view setImage: image];
+            [view setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
+            [view setAutoresizesSubviews:YES];
             
             // http://www.cocoabuilder.com/archive/cocoa/199554-nswindow-title-bar-icon-without-representedurl.html
             if ([NSThread isMainThread] == YES)
             {
-                [window setRepresentedURL:[NSURL fileURLWithPath:[window title]]];
-                [[window standardWindowButton:NSWindowDocumentIconButton] setImage:image];
+                [tile setContentView: view];
+                [tile display];
             }
             else
             {
-                [window performSelectorOnMainThread:@selector(setRepresentedURL:) withObject:[NSURL fileURLWithPath:[window title]] waitUntilDone:YES];
-                [[window standardWindowButton:NSWindowDocumentIconButton] performSelectorOnMainThread:@selector(setImage:) withObject:image waitUntilDone:YES];
+                [tile performSelectorOnMainThread:@selector(setContentView:) withObject:view waitUntilDone:YES];
+                [tile performSelectorOnMainThread:@selector(display) withObject:nil waitUntilDone:YES];
             }
             
             [image release];
diff -r 73ca07cfcf98 toys/HelloWorld/src/helloworld/HelloImage.java
--- a/toys/HelloWorld/src/helloworld/HelloImage.java	Tue Feb 14 10:06:29 2012 -0800
+++ b/toys/HelloWorld/src/helloworld/HelloImage.java	Tue Feb 14 17:22:24 2012 -0500
@@ -41,8 +41,9 @@
         System.err.println("BestCursor Size ="+d);
 
         Image animImage = new Image(animImageURL);
+        Image fxImage = new Image(imageURL);
         
-        addImageToObservableList(seq, 160, 20, 420, 120, new Image(imageURL),
+        addImageToObservableList(seq, 160, 20, 420, 120, fxImage,
                            createImageCursor(animImageURL, 16, 16));
 //        addImageToObservableList(seq, 20, 20, 120, 120, animImage,
 //                           createImageCursor(animCursorURL, 0, 0));
@@ -54,7 +55,7 @@
         addImageToObservableList(seq, 20, 20, 120, 120, animImage,
                            createImageCursor(slowImageURL, 1862*0.4f, 0));
 
-        stage.getIcons().add(slowImage);
+        stage.getIcons().add(fxImage);
         stage.setScene(scene);
         stage.show();
     }