gistfile1.txt

function parseCookie(str){
  var obj = {}
    , pairs = str.split(/[;,] */);
  for (var i = 0, len = pairs.length; i < len; ++i) {
    var pair = pairs[i]
      , eqlIndex = pair.indexOf('=')
      , key = pair.substr(0, eqlIndex).trim().toLowerCase()
      , val = pair.substr(++eqlIndex, pair.length).trim();

    // Quoted values
    if (val[0] === '"') {
      val = val.slice(1, -1);
    }

    // Only assign once
    if (obj[key] === undefined) {
      obj[key] = decodeURIComponent(val.replace(/\+/g, ' '));
    }
  }
  return obj;
};