rem: function midnight(givenDate) 
add: function midnight(givenDate) 
context: function midnight(givenDate) {  // midnight on the given date -  return new Date(givenDate.getFullYear(), givenDate.getMonth(), givenDate.getDate());}
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/0b675418ba636127763e94e614e62364d6caa659/15.9.5.6.js/clean/js/tests/ecma_3/Date/15.9.5.6.js