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: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/1d5dba8d275de8b1e9bb3a059078b036865ee6fd/navigator.js/clean/suite/browser/navigator.js