function changeQuickLogin(type)
{
  var elLabelTxt = $("btn_login").getElementsByTagName("em")[0];
  if(type == "user")
  {
    $("quick-login").name = "phone";
    $("quick-login").value = "06-nummer";
    $("login-small").action = "inloggen";
    elLabelTxt.innerHTML = "gebruiker";
  }

  else
  {
    $("quick-login").name = "email";
    $("quick-login").value = "emailadres";
    $("login-small").action = "adverteerders/inloggen";
    elLabelTxt.innerHTML = "adverteerder";
  }
}

Event.observe(window, 'load', function(){
  Event.observe("user_gebruiker", 'change', function(){ changeQuickLogin("user") });
  Event.observe("user_adverteerder", 'change', function(){ changeQuickLogin("advertiser") });
});