rem: gBrowser.selectedTab = gBrowser.addTab('about:blank'); setTimeout("gURLBar.focus();", 0); 
add: var homePage = getHomePage(); var uriToLoad = homePage[0]; gBrowser.selectedTab = gBrowser.addTab(uriToLoad); var navBar = document.getElementById("nav-bar"); if (uriToLoad == "about:blank" && !navBar.hidden && window.locationbar.visible) setTimeout("gURLBar.focus();", 0); else setTimeout("content.focus();", 0); 
context: function BrowserOpenTab(){  if (!gInPrintPreviewMode) {    gBrowser.selectedTab = gBrowser.addTab('about:blank');    setTimeout("gURLBar.focus();", 0);   }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/30932f1fd446101eac54437cd0fed4c809be0af0/navigator.js/clean/suite/browser/navigator.js