jQuery prototype to parse URL query strings

jQuery-queryStr.js

(function($) { // Prototypes a function to parse URL query strings:
  $.QueryString = (function(a) {
    if (a === "") return {};
    var b = {};
    for (var i = 0; i < a.length; ++i)
    {
      var p=a[i].split('=');
      if (p.length !== 2) continue;
      try {
        b[p[0]] = decodeURIComponent(p[1].replace(/\+/g, " "));
      } catch (excep) { }
    } // for
    return b;
  })(window.location.search.substr(1).split('&'));
})(jQuery); // End of URL query string parsing function