Prof Hwang i have ask about simulation up is very good work really is excllent
But i notice a thing when i show control or any kind of show in simulation
Panel show by icon EJS not icon of java on other simulation is like alert message This
Is strange or my browser appear simulation wrong because on other simulation appear by any panel
Appear by icon of java not icon of sure is not wrong but is just ask what is resion for applet appear like it ?