[img]http://www.phy.ntnu.edu.tw/ntnujava/index.php?action=dlattach;topic=1502.0;attach=1805;image[/img] Upload new EJS jar file. the checkbox looks like this
Hi Ahmed
can try to upload yourself?

Oh yes, can also attribute where you got the source codes? cyberwellness
for example:
http://physics.bu.edu/~duffy/Ejs/EP_chapter17/EField_and_Potential_1D_v2.html