function changeContact(id) {
	document.getElementById('contact_1').className = ( id == 'contactForm' ? 'active' : '' );
    document.getElementById('contact_2').className = ( id == 'contactForm' ? '' : 'active' );

    document.getElementById('contactForm').style.display = ( id == 'contactForm' ? '' : 'none' );
    document.getElementById('contactInfo').style.display = ( id == 'contactForm' ? 'none' : '' );
}