//-------------------------------
//JavaScript

function pack(str) {
  var arr = [];
  //Add Salt...
  var iCounter = 5;
  for (var i = 0, l = str.length; i < l; i ++) {
    iCounter += 1;
    if (iCounter > 10) {
    iCounter = 0;
    }
    var Hex = Number(str.charCodeAt(i)+iCounter).toString(16);
    if (Hex.length < 2) {
    Hex = "0" + Hex;
    }
    arr.push(Hex);
  }
  return  reverse(arr.join('').toUpperCase());
}

function reverse(sString){
    return sString.split("").reverse().join("");
}

function unpack(hex1) {
    var str = '';
    var iCount = 5;
    Hex = reverse(hex1);
    for (var i = 0; i < Hex.length; i += 2) {
        var v = parseInt(Hex.substr(i, 2), 16);
        iCount +=1;
        if (iCount > 10 ) {
        iCount = 0 ;
        }
        if (v) str += String.fromCharCode(v-iCount);
    }
    return str;
}  

//End JavaScript