function userNameChanged()
{
  var userUrl = '/userData.cgi?user=' + escape($('userName'));
  var user = parseUserData(JwacsLib.fetchData('GET', userUrl));
  var institution = null;
  if(user.institutionId)
  {
    var instUrl = '/institutionData.cgi?id=' + escape(user.institutionId);
    institution = parseInstitutionData(JwacsLib.fetchData('GET', url));
  }
  displayUser(user, institution);
}