rem: optgroupObject.prototype.canMoveDown = function canMoveDown() { return gDialog.lastChild() > treeSelection.currentIndex; } 
add: canMoveDown:      function canMoveDown() { return false; }, 
context: optgroupObject.prototype.canMoveDown = function canMoveDown(){  return gDialog.lastChild() > treeSelection.currentIndex;}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/e5158d88eff369883b9fa994276d0b06cfe7ca8f/EdSelectProps.js/clean/editor/ui/dialogs/content/EdSelectProps.js