Configuring the Loading Screen for Java Applet

This can be done via the following parameters in the HTML:

  image: 'loading-img.gif', 

  boxbgcolor: '#cccccc', 

  boxborder: 'false', 

  centerimage: 'true

Reference: http://docs.oracle.com/javase/tutorial/deployment/deploymentInDepth/customizeLoadingScreen.html