Hiding Menubar

I want to prevent the user from opening a new Window by doing File>New>Window. Can anyone help me in this
[118 byte] By [sinua] at [2007-10-2 23:58:26]
# 1
the create a popup window that has no toolbars, etc.
jgalacambraa at 2007-7-14 16:45:29 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...