text: function rot13(str) { // LBH QVQ VG!
    var asCode = [];
    var decrypted = [];
      for (var i = 0; i < str.length; i++) {
  	if (str.charCodeAt(i) >= 65 && str.charCodeAt(i) <= 90) {
  	if (str.charCodeAt(i) - 13 < 65) {
  	  asCode.push(str.charCodeAt(i) + 26 - 13);
  	} else {
  	  asCode.push(str.charCodeAt(i) - 13);
  	}
  	} else {
  	  asCode.push(str.charCodeAt(i));
  	}
  	}
  
     for (var j = 0; j < asCode.length; j++) {
     	decrypted.push(String.fromCharCode(asCode[j]));
  	}
  	 return decrypted.join('');
  	}
  
  // Change the inputs below to test
    rot13("SERR PBQR PNZC");
  