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));
}

function DeleteCookie (name) {
  var exp = new Date();
  exp.setTime (exp.getTime() - 1);
  var cval = getCookie (name);
  document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

function testCookie() {
	document.cookie = "cookies_enabled=1;expires=.;path=/;";
	var cookies_enabled = getCookie('cookies_enabled');
	if (!cookies_enabled)
	    return false;
	else
		return true;
}

function clearTestCookie() {
	DeleteCookie('cookies_enabled');
}