$(function(){
  $('.txtfield').addClass('default');
  $('.txtfield').focus(function(){
    if ($(this).hasClass('default')) {
      $(this).val('');
      $(this).removeClass('default');
    }
  });
  var $tabs = $('#navbar').tabs({ fx : { opacity : 'toggle'}});
  $('#logo').click(function(){
    $tabs.tabs('select', 0);
  });
  $('#message-form').validate({
    focusInvalid : true,
    rules : {
      name : "required",
      email : {
        required : true,
        email : true
      },
      messagebody : "required"
    },
    messages : {
        name : "Please specify your name.",
        email : {
          required : "Please enter your email.",
          email : "Please enter a valid email address."
        },
        messagebody : "Message content is required."
    },
    errorLabelContainer : '#user-message',
    errorElement : 'span'
  });
});