JS Rot13 1337 Talker SRC

<center>
<body onload="Make1337()">
<title>1337 Text Converter Coded By BrU</title>
<h2>Enter Text Here:</h2>
<p><textarea id="elite" scrollbars="true" cols="100" rows="10">DJ BrU Own's You!!</textarea></p>
<h2>Converted 1337 Text:</h2>
<p><textarea id="1337" scrollbars="true" cols="100" rows="10"></textarea></p>
<p><button id="Convert" onclick="Make1337():">Convert All Text To 1337 Format</button></p>
<script>
var elite = document.getElementById("elite"),L337 = document.getElementById("1337"),

  alphabets = {
    a: "à",
    b: "|3",
    c: "ç",
    e: "è",
    g: "6",
    i: "î",
    n: "ñ",
    o: "ò",
    p: "þ",
    s: "5",
    t: "7",
    u: "ü",
    y: "ÿ",
    z: "2"
  },

  words = {
    "cool": "k00l",
    "dude": "d@@d",
    "hacker": "h4x@r",
    "newb": "n@@b",
    "fucker": "fux0r"
  },
  wordsArr,
  text;

function changeLetters() {
  text = elite.value.toLowerCase();
  for (var i = 0; i < text.length; i++) {
    if (alphabets[text[i]]) {
      text = text.replace(text[i], alphabets[text[i]]);
    }
  }

}

function changeWords() {
  wordsArr = text.split(" ");
  for (var i = 0; i < wordsArr.length; i++) {
    if (words[wordsArr[i]]) {
      wordsArr[i] = words[wordsArr[i]];
    }
  }
}

function Make1337() {
changeLetters();
changeWords();
L337.value = rot13(wordsArr.join(" "));
}
function rot13(string) {
var result = '';
var str = string;
function strg(out){
    var result1 = [];
    return result1 = out.split('');
  }
  var alphArr =strg('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
  var inverseArr =strg('nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKL');
 for ( var i = 0; i < str.length; i++ ) {
     if (alphArr.indexOf( str[i] ) !== -1)
 {
        result += inverseArr[ alphArr.indexOf(str[i]) ];
    } else result += str[i];
  }
 return result;
}
elite.addEventListener("input", Make1337);
document.getElementById("Convert").addEventListener("click", Make1337);
</script>
</body>
</center>
</html>