notenice trick

Object.prototype.getType = function () {
  var ctor = this.constructor;
  if (typeof (ctor) != 'function') return;
  var reg = new RegExp(/function\ ([\w\$\_][\w\$\_\d]*)\(.*/gmi);
  var matches = reg.exec(ctor.toString());    
  return (matches[1]);  
};
/* above for core javscript */
/* the following are for the core and the client, *not*  stable! */
var Node = {};
Node.ELEMENT_NODE = 1;          // Element
Node.ATTRIBUTE_NODE = 2;        // Attr
Node.TEXT_NODE = 3;             // Text
Node.COMMENT_NODE = 8;          // Comment
Node.DOCUMENT_NODE = 9;         // Document
Node.DOCUMENT_FRAGMENT_NODE=11; // DocumentFragment 

getType = function (obj){
  if (obj.navigator){
    return 'Window';
  }
  else if (obj.write){
    return 'Document';
  }
  else if(obj.tagName){
    var ret = obj.tagName;
    if (ret == 'INPUT' || ret == 'SELECT'){
      ret += ' ' + obj.type;
    }
    return ret;
  }
  else if(obj.nodeType){
    switch(obj.nodeType){
      case Node.ELEMENT_NODE:
        return obj.nodeName;
      case Node.ATTRIBUTE_NODE:
        return 'Attr';
      case Node.TEXT_NODE:
        return 'Text';
      case Node.COMMENT_NODE:
        return 'Comment'
      case Node.DOCUMENT_FRAGMENT_NODE:
        return 'DocumentFragment'
      default:
    }
  }
  else if (obj.constructor) {
    return obj.getType();    
  }
};