Do you want to show a popup window(like the attached image)? Or you just need some string on top of the simulation?

/htdocs/ntnujava/ejsuser/2/users/ntnu/fkh/showdialog_pkg/showdialog.propertiesFull screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
Download EJS jar file(1263.6kB):double click downloaded file to run it. (6 times by 2 users) , Download EJS source (1 times by 1 users) View EJS source