add: parent.hPrefWindow.registerOKCallbackFunc(onOK); 
context: function Startup(){    if (top.opener) {    var browser = top.opener.document.getElementById("content");    var l = browser.mPanelContainer.childNodes.length;    if (l > 1) {      var useButton = document.getElementById("browserUseCurrent");      useButton.label = useButton.getAttribute("label2");    }  }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/9de1c556326d62d792f554552bf1e3e642f4bba1/pref-navigator.js/clean/browser/components/prefwindow/content/pref-navigator.js