rem: if (browser.mTabContainer.childNodes.length > 1) { 
add: if (browser.tabContainer.childNodes.length > 1) { 
context: function BrowserCloseTabOrWindow(){  var browser = getBrowser();  if (browser.mTabContainer.childNodes.length > 1) {    // Just close up a tab.    browser.removeCurrentTab();    return;  }  BrowserCloseWindow();}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/8919adc1bfc7a962fba85a37c3e9011c759ce5af/navigator.js/buggy/suite/browser/navigator.js