/**
 * Sets a Cookie with the given name and value.
 *
 * name       Name of the cookie
 * value      Value of the cookie
 * [expires]  Expiration date of the cookie (default: end of current session)
 * [path]     Path where the cookie is valid (default: path of calling document)
 * [domain]   Domain where the cookie is valid
 *              (default: domain of calling document)
 * [secure]   Boolean value indicating if the cookie transmission requires a
 *              secure transmission
 */
function setCookie(name, value, expires, path, domain, secure) {
    var expireDate = new Date();
    var EXPIR_MONTH = 30*24*3600*1000;
    var _domain = document.location.host;
    if(/\.[a-zA-Z]{1,4}$/.test(_domain)){
        var temp = _domain.split(".");
        if(temp.length >1){
            _domain = "; domain="+ temp[temp.length-2]+"."+temp[temp.length-1];
        }
    }else{
        _domain = "";
    }
    (expires) ? expireDate.setTime(expireDate.getTime() + expires * 1000) : expireDate.setTime(expireDate.getTime() + EXPIR_MONTH);
    document.cookie= name + "=" + escape(value) +
    "; expires=" + expireDate.toGMTString() +
    ((path) ? "; path=" + path : "; path=/") + 
    ((domain) ? "; domain=" + domain : _domain) +
    ((secure) ? "; secure" : "");
}

/**
 * Gets the value of the specified cookie.
 *
 * name  Name of the desired cookie.
 *
 * Returns a string containing value of specified cookie,
 *   or null if cookie does not exist.
 */
function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else {
    begin += 2;
  }
  var end = document.cookie.indexOf(";", begin);
  if (end == -1) {
    end = dc.length;
  }
  return unescape(dc.substring(begin + prefix.length, end));
}

/**
 * Deletes the specified cookie.
 *
 * name      name of the cookie
 * [path]    path of the cookie (must be same as path used to create cookie)
 * [domain]  domain of the cookie (must be same as domain used to create cookie)
 */
function deleteCookie(name, path, domain) {
  var expireDate = new Date();
  expireDate.setTime(expireDate.getTime() - 1000);
  if (getCookie(name)) {
    document.cookie = name + "=" + 
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      "; expires="+expireDate.toGMTString();
  }
}

function detectCookie(){
    setCookie("test", "ok", 60);
    if(getCookie("test") != null){
        return true;
    }
    return false;
}