function doButtons(picimage) {
	document.getElementById('picture').src = picimage;
}
function changeImage(imageid,imagename) {
	var image = document.getElementById(imageid);
	image.src = 'http://www.seeshellphoto.com/images/' + imagename;
}
function submitForm() {
        var email = document.getElementById('emailin').value;
        var phone = document.getElementById('phone').value;
        var method = document.getElementById('contactform').contact.checked;
	var hearaboutus = document.getElementById('hearaboutus').value;
	var error = false;	

        if (document.getElementById('contactform').contact[0].checked) {
                if (phone == "") {
                        alert("Please enter your phone number and try again");
                        document.getElementById('phone').value = "";
                        document.getElementById('phone').focus();
			error = true;
                }
        } else if (document.getElementById('contactform').contact[1].checked) {
                if (email == "") {
                        alert("Please enter your email address and try again");
                        document.getElementById('emailin').value = "";
                        document.getElementById('emailin').focus();
			error = true;
                }
	} else {
                alert("You must select a contact method before submitting the form");
		error = true;
        }

	if (hearaboutus == ""){
		alert("Please complete the \"How did you hear about us\" field");
		error = true;
        }

	if (error) {
		return;
	}
	document.getElementById('contactform').submit();
}