function validator(){

    var titleField =  document.forms["freedvd_form"].title.value;
    var nameField =  document.forms["freedvd_form"].name.value;
    var emailField =  document.forms["freedvd_form"].email_address.value;
    var telephoneField =  document.forms["freedvd_form"].contact_number.value;

    if( titleField.length == 0 ){
      alert("Please enter your title!");
      return false;
    }

    if( nameField.length == 0 ){
      alert("Please enter your name!");
      return false;
    }

    if( telephoneField.length == 0 ){
      alert("Please enter your contact number!");
      return false;
    }

    if( emailField.length == 0 ){
      alert("Please enter your email address!");
      return false;
    }

    document.forms["freedvd_form"].submit();

  }//end validate


document.write('<form method="post" action="freedvd_process.asp" name="freedvd_form"><div class="freedvd_form">');
document.write('Title:<br /><input type="text" name="title" width="50px"/><br /><br />');
document.write('Name:<br /><input type="text" name="name" /><br /><br />');
document.write('Email address:<br /><input type="text" name="email_address" /><br /><br />');
document.write('Address line 1:<br /><input type="text" name="address_line_1" /><br /><br />');
document.write('Address line 2:<br /><input type="text" name="address_line_2" /><br /><br />');
document.write('Address line 3:<br /><input type="text" name="address_line_3" /><br /><br />');
document.write('Postcode:<br /><input type="text" name="postcode" /><br /><br />');
document.write('Contact number:<br /><input type="text" name="contact_number" /><br /><br />');
document.write('Area Of Interest:<br /><input type="checkbox" name="coaching" value="coaching">Coaching<br>');
document.write('<input type="checkbox" name="teacher" value="teacher">Teacher/HeadTeacher<br>');
document.write('<input type="checkbox" name="parent" value="parent">Parent<br>');
document.write('<input type="checkbox" name="sponsor" value="sponsor">Sponsor<br><br />');
document.write('Any comments?<br /><textarea cols="25" name="comments" style="height:112px;"></textarea><br />');
document.write('<br /><input type="button" value=" Submit " onclick="return validator();" />');
document.write('<br /><br /></div></form>');