// validates fields. If user does not enter data in required field, focus is returned to that field
function validate()
     {
       
         if(document.bethContact.txtFirstName.value == "")
         {
             alert('Please enter a first name');
             document.bethContact.txtFirstName.focus();
            return false;
         }
         else if(document.bethContact.txtLastName.value == "")
         {
             alert('Please enter a last name');
             document.bethContact.txtLastName.focus();
            return false;
         }
        else if(document.bethContact.textFeedback.value == "")
        {
            alert('Please enter your comments');
            document.bethContact.textFeedback.focus();
            return false;
        }
        else if (validateEmail() == false)
        {
       
        }
         else 
        {
            //submits form after validation, returns user to home page
            alert('Thank you for your comments');
                document.bethContact.submit();
            return true;
        }
    }


     function validateEmail()
    {
        at=document.bethContact.txtEmail.value.indexOf("@")
        dot=document.bethContact.txtEmail.value.lastIndexOf(".")
        if(document.bethContact.txtEmail.value == "")
        {
            alert('Please enter an email address');
            document.bethContact.txtEmail.focus();
            return false;
            
        }
        else if (at<1||dot-at<2)
        {
            alert('Please enter a valid email address');
            document.bethContact.txtEmail.focus();
            return false;
            
        }
    }