prefwindow - Archive of obsolete content
you can set its label with the buttonlabelextra2 attribute and its command with the ondialogextra2 attribute.
...you can set its label with the buttonlabelextra2 attribute and its command with the ondialogextra2 attribute.

buttons - Archive of obsolete content
you can set its label with the buttonlabelextra2 attribute and its command with the ondialogextra2 attribute.

Attribute (XUL) - Archive of obsolete content
enu menuactive min minheight minresultsforpopup minwidth mode modifiers mousethrough movetoclick multiline multiple name negate newlines next noautofocus noautohide noinitialfocus nomatch norestorefocus object observes onbeforeaccept onbookmarkgroup onchange onclick onclosetab oncommand oncommandupdate ondialogaccept ondialogcancel ondialogclosure ondialogextra1 ondialogextra2 ondialoghelp onerror onerrorcommand onextra1 onextra2 oninput onload onnewtab onpageadvanced onpagehide onpagerewound onpageshow onpaneload onpopuphidden onpopuphiding onpopupshowing onpopupshown onsearchcomplete onselect ontextcommand ontextentered ontextrevert ontextreverted onunload onwizardback onwizardcancel onwizardfinish onwizardnext open ordinal orient pack...

Index - Archive of obsolete content
227 ondialogextra2 xul attributes, xul reference no summary!

buttons - Archive of obsolete content
you can set its label with the buttonlabelextra2 attribute and its command with the ondialogextra2 attribute.