rem: switch(QxWindowManager.getActiveWindow()) 
add: switch(w1.getWindowManager().getActiveWindow()) 
context: proto.compareWindows = function(w1, w2){  switch(QxWindowManager.getActiveWindow())  {    case w1:      return 1;    case w2:      return -1;  };  return w1.getZIndex() - w2.getZIndex();};
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/ec3b097add4dede7932c9043a6db72cedbcdb276/QxWindowManager.js/buggy/qooxdoo/source/script/managers/QxWindowManager.js