Testing env: 32bit winxp, 8 nightly bundle #603

Steps to reproduce:
- download jar files
http://rehte.cn.oracle.com:8080/wshost/new_framework/new_framework/tests/javafx/manual/Preloader/classes/hello.jar
and
http://rehte.cn.oracle.com:8080/wshost/new_framework/new_framework/tests/javafx/manual/Preloader/classes/testpreloader.jar
- execute: java -Djavafx.preloader.class=TestPreloader -Djavafx.application.class=HelloPreloader -jar hello.jar
- A progress bar window should show, and in the application window, there should be a "notify preloader" button, if there is no the button, bug is reproduced.
Loading the jnlp app,
javaws http://rehte.cn.oracle.com:8080/wshost/new_framework/new_framework/tests/javafx/manual/Preloader/html/HelloPreloaderProgress.jnlp
the "notify preloader" button can be seen.

Source code location:
http://rehte.cn.oracle.com:8080/wshost/new_framework/new_framework/tests/javafx/manual/Preloader/src/