“The following code demonstrates how to pass custom arguments to a dialog, process those arguments in the dialog, and return user-modified arguments to the caller. The code to open a dialog named mydialog.xul and pass it arguments: var params = {inn:{name:”foo”, description:”bar”, enabled:true}, out:null}; window.openDialog(“chrome://myext/content/mydialog.xul”, “”, “chrome, dialog, modal, resizable=yes”, params).focus(); if (params.out) { //…