rem: if (typeof vClassName != QxGlobal.TYPEOF_STRING) { 
add: if (typeof vClassName != "string") { 
context: Function.prototype.extend = function(vFunction, vClassName){  if (typeof vFunction != QxGlobal.TYPEOF_FUNCTION) {    throw new Error("Extend: Function/Constructor to extend from is not a function: " + vFunction);  };  if (typeof vClassName != QxGlobal.TYPEOF_STRING) {    throw new Error("Extend: Missing or malformed className: " + vClassName);  };  // build helper function  // this omits the initial constructor call while inherit properties  var f = new Function();  f.prototype = vFunction.prototype;  proto = this.prototype = new f;  proto.superclass = vFunction;  proto.classname = vClassName;  proto.constructor = this;  return proto;};
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/8eec927e9a1b2b974ffec473ee66f010a2fad020/QxExtend.js/clean/qooxdoo/source/script/core/QxExtend.js