function generateEmail() {
     var email;
     var nameField = document.getElementById('instructor_name');
     var emailField = document.getElementById('instructor_email');
     var name = nameField.value.split(' ');
     
     if (name.length == 2 && emailField.value == '') {
          email = name[1] + name[0] + '@fhda.edu';
          emailField.value = email;
     }
}

function setup() {
     document.getElementById('instructor_name').onblur = generateEmail;
}

window.onload = setup;