gecko-dev/xpfe/global/resources/content/charsetOverlay.xul

<?xml version="1.0"?> 
<?xml-stylesheet href="chrome://global/skin/tasksOverlay.css" type="text/css"?> 



<!DOCTYPE  window SYSTEM "chrome://global/locale/charsetOverlay.dtd">


<overlay id="charsetOverlay"
	xmlns:html="http://www.w3.org/TR/REC-html40"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
	xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

<html:script language="JavaScript" src="chrome://global/content/charsetOverlay.js"/>

	<!-- Charset Menu -->
	<menu id="charsetMenu" value="&charsetMenu.label;" datasources="rdf:charset-menu" ref="NC:BrowserCharsetMenuRoot">
        <template>
            <rule>
	            <menupopup>
                <menuitem type="checkbox" checked="rdf:http://home.netscape.com/NC-rdf#Checked" uri="..." value="rdf:http://home.netscape.com/NC-rdf#Name" oncommand="SetDefaultCharacterSet(event.target)"/>
	            </menupopup>
            </rule>
        </template>

        <menupopup>
  	    <menu value="More"  datasources="rdf:charset-menu" ref="NC:BrowserMoreCharsetMenuRoot">
            <template>
                <rule>
		            <menupopup>
                    <menuitem uri="..." value="rdf:http://home.netscape.com/NC-rdf#Name" oncommand="SetDefaultCharacterSet(event.target)"/>
			        </menupopup>
                </rule>
            </template>
            <menupopup>
            </menupopup>
        </menu>
        </menupopup>
	</menu>

</overlay>