function toggle(obj1,obj2) {
	var el1 = document.getElementById(obj1);
	var el2 = document.getElementById(obj2);
	if ( el1.style.display != "none" ) {
		el1.style.display = 'none';
		el2.style.display = 'block';
	}
	else {
		el1.style.display = 'block';
		el2.style.display = 'none';
	}

	document.form3.delivery_firstname.value ="";
	document.form3.delivery_lastname.value ="";
	document.form3.delivery_address1.value ="";
	document.form3.delivery_address2.value ="";
	document.form3.delivery_suburbtown.value ="";
	document.form3.delivery_postcode.value ="";

}