rem: browser.removeCurrentTab(); 
add: browser.removeCurrentTab(); 
context: function BrowserCloseTabOrWindow(){  var browser = getBrowser();  if (browser && browser.localName == 'tabbrowser' && browser.mTabContainer.childNodes.length > 1) {    // Just close up a tab.    browser.removeCurrentTab(); // XXXdwh In tab mode, the menu item should say close tab.    return;  }  BrowserCloseWindow();}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/0c3c67433958de301a6a0b7ad40364112fbdaa99/navigator.js/clean/xpfe/browser/resources/content/navigator.js