rem: if (object && object.constructor == Hash) return object; 
add: if (object instanceof Hash) return object; 
context: function $H(object) {  if (object && object.constructor == Hash) return object;  return new Hash(object);};
meta: 7608	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7608/d556a0875c83645645bd2067594241546d26d052/prototype.js/buggy/web/js/prototype.js