rem: child = aParent.lastChild; 
add: var child = aParent.lastChild; 
context:   realHideOpenInTabsMenuItem: function (aParent)  {    if (!aParent.hasChildNodes())      return;    child = aParent.lastChild;    var removed = 0;    while (child) {      var cclass = child.getAttribute("class");      if (cclass == "openintabs-menuitem" || cclass == "openintabs-menuseparator") {        var prevchild = child.previousSibling;        aParent.removeChild(child);        child = prevchild;        removed++;        if (removed == 2)          break;      } else {        child = child.previousSibling;      }    }  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/c13c92616945047f29b14275413e9e4d11773c91/bookmarksMenu.js/clean/browser/components/bookmarks/content/bookmarksMenu.js