diff --git a/src/main/java/com/google/gwtexpui/clippy/client/CopyableLabel.java b/src/main/java/com/google/gwtexpui/clippy/client/CopyableLabel.java
index 1beee4c..cc8c05f 100644
--- a/src/main/java/com/google/gwtexpui/clippy/client/CopyableLabel.java
+++ b/src/main/java/com/google/gwtexpui/clippy/client/CopyableLabel.java
@@ -144,6 +144,7 @@
       h.openElement("embed");
       h.setWidth(SWF_WIDTH);
       h.setHeight(SWF_HEIGHT);
+      h.setAttribute("wmode", "transparent");
       h.setAttribute("type", "application/x-shockwave-flash");
       h.setAttribute("src", swfUrl());
       h.setAttribute("FlashVars", flashVars);