$(document)

.ready(function() {

  var
    changeSides = function() {
      $('.ui.shape')
        .eq(0)
          .shape('flip over')
          .end()
        .eq(1)
          .shape('flip over')
          .end()
        .eq(2)
          .shape('flip back')
          .end()
        .eq(3)
          .shape('flip back')
          .end()
      ;
    },
    validationRules = {
      firstName: {
        identifier  : 'email',
        rules: [
          {
            type   : 'empty',
            prompt : 'Please enter an e-mail'
          },
          {
            type   : 'email',
            prompt : 'Please enter a valid e-mail'
          }
        ]
      }
    }
  ;

  $('.ui.dropdown')
    .dropdown({
      on: 'hover'
    })
  ;

  $('.ui.form')
    .form(validationRules, {
      on: 'blur'
    })
  ;

  $('.masthead .information')
    .transition('scale in', 1000)
  ;

  setInterval(changeSides, 3000);

})

;