rem: selected.parentNode.appendChild(selected); 
add: active_languages.appendChild(selected); 
context: function MoveDown() {  if (active_languages.selectedItems.length == 1) {    var selected = active_languages.selectedItems[0];    if (selected.nextSibling) {      if (selected.nextSibling.nextSibling) {        selected.parentNode.insertBefore(selected, selected.nextSibling.nextSibling);      }      else {        selected.parentNode.appendChild(selected);      }      active_languages.selectItem(selected);    }  }  if (active_languages.selectedIndex ==       (active_languages_treeroot.childNodes.length - 1))  {    // selected item is last    var moveDown = document.getElementById("down");    moveDown.disabled = true;  }  if (active_languages_treeroot.childNodes.length > 1)  {    // more than one item so we can move selected item back up     var moveUp = document.getElementById("up");    moveUp.disabled = false;  }  UpdateSavePrefString();} //MoveDown
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/1e2d5d9ba4147d5ea3cc58789a6ba7f2426d0695/pref-languages.js/buggy/suite/common/pref/pref-languages.js