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    <title>Tabbed Form</title>
    <form name="myform" onsubmit="return validateForm()">
        <li class="title">Who Are You?</li>
        <li class="fields">
          <label>*First Name:</label><br />
          <input id="first_name" class ="req" type ="text" /><br />
          <label>Middle Name:</label><br />
          <input id="middle_name" type ="text" /><br />
          <label>Last Name:</label><br />
          <input id="last_name" type ="text" /><br />
          <label>*Email:</label><br />
          <input id="email" class ="req" type ="text" /><br />
        <li class="title">Where Are You?</li>
        <li class="fields">
          <label>City:</label><br />
          <input id="city" type ="text" /><br />
          <label>*State:</label><br />
          <input id="state" class ="req" type ="text" /><br />
          <label>Country:</label><br />
          <input id="country" type ="text" /><br />
        <li class="title"> What Do You Do?</li>
        <li class="fields">
          <label>*Occupation:</label><br />
          <input id="occupation" class ="reg" type ="text" /><br />
          <label>Company:</label><br />
          <input id="company" type ="text" /><br />
          <label>Company Location:</label><br />
          <input id="location" type ="text" /><br />
      <input type="submit" value="Submit Form" />
              body {
  width: 500px;
  margin: auto;
  text-align: center;

li {
  list-style: none;

li.fields {
  margin: 0;
  padding: 1em 0;

li.title {
  cursor: pointer;
  font-weight: bold;
  font-size: 1.5em;
  line-height: 2em;
  background: #e3e3e3;
  border-bottom: 1px solid #c5c5c5;
  border-top: 1px solid white;

.hide { display: none; }

              $(document).ready(function() {
  $('ul').on('click', 'li.title', function(){

function validateForm() {
  for(var i = 0; i < myform.elements.length; i++) {
    if(myform.elements[i].className == "req" && myform.elements[i].value.length == 0) {
      alert('Please fill in all required fields');
      return false;
  var email = document.getElementById('email').value;
  var atpos = email.indexOf('@');
  var dotpos = email.lastIndexOf('.');
  if (atpos < 1 || dotpos < atpos+2 || dotpos+2 >= x.length) {
      alert('Please type a valid email address');
    return false;
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