s-melnikov

function query(obj) {
  var str = "";
  for (var prop in obj) {
    str && (str += "&") || (str = "?");
    if (obj.hasOwnProperty(prop)) str += prop + "=" + obj[prop];
  }
  return str;
}

s-melnikov

function params(str) {
  var res = {};
  (str || location.search).replace(/^\?/, "").split("&").forEach(function(str) {
    str = str.split("=");
    res[str[0].toLowerCase()] = str[1] || true;
  });
  return res;
}

s-melnikov

function cookie(key, value, hours, domain, path) {
  var expires = new Date(),
    pattern = "(?:; )?" + key + "=([^;]*);?",
    regexp = new RegExp(pattern);
  if (value) {
    key += '=' + encodeURIComponent(value);
    if (hours) {
      expires.setTime(expires.getTime() + (hours * 3600000));
      key += '; expires=' + expires.toGMTString();
    }