function validate_reg(verticalForm)
{
	if (verticalForm.contact_firstname.value == "")
  {
    alert("Please enter your first name.");
    verticalForm.contact_firstname.focus();
    return (false);
  }
	
	if (verticalForm.contact_lastname.value == "")
  {
    alert("Please enter your surname.");
    verticalForm.contact_lastname.focus();
    return (false);
  }
  
	if (verticalForm.contact_email.value == "")
  {
    alert("Please enter your email address.");
    verticalForm.contact_email.focus();
    return (false);
  }
  
  	if (verticalForm.contact_email.value.indexOf('@') < 0)
  {
    alert("Please enter a valid email address.");
    verticalForm.contact_email.focus();
    return (false);
  }
  
    if (verticalForm.contact_email.value.lastIndexOf('.') < 0)
  {
    alert("Please enter a valid email address.");
    verticalForm.contact_email.focus();
    return (false);
  }
  
  	if (verticalForm.contact_email.value.indexOf(' ') != -1)
  {
    alert("Please enter a valid email address.");
    verticalForm.contact_email.focus();
    return (false);
  }
 
	 return (true);
  }