rem: parent.hPrefWindow.setPref("int", "accessibility.tabfocus", data.tabNavPref); 
add: if (!/Mac/.test(navigator.platform)) parent.hPrefWindow.setPref("int", "accessibility.tabfocus", data.tabNavPref); 
context: function saveKeyNavPrefs(){  var data = parent.hPrefWindow.wsm.dataManager.pageData["chrome://communicator/content/pref/pref-keynav.xul"];  parent.hPrefWindow.setPref("int", "accessibility.tabfocus", data.tabNavPref);  parent.hPrefWindow.setPref("bool", "accessibility.typeaheadfind.linksonly", data.linksOnlyPref == 1);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/ead7dea937e502e442db1719f9a90d255c9d9990/pref-keynav.js/clean/suite/common/pref/pref-keynav.js