Example Window
•<?xml version="1.0"?> <?xml-stylesheet href="chrome://global/skin/xul.css“ type="text/css"?>
•<!DOCTYPE window>
•<window id="main-window“ xmlns:html=http://www.w3.org/TR/REC-html40 xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
• <menubar><menu name="File">
• <menuitem name="Hello World!" onclick="dump('Hello world!\n');"/></menu>
• </menubar> <html:iframe id="content-frame" src="contentframe.html" flex="100%"/>
• </window>