function process(action) {
	var f = document.forms['contactUsForm'];

	switch (action) {
	case 'send':
		if (f.senderName.value == "") {
			alert("Please supply your name.");
			f.senderName.focus();
		} else if (f.emailAddress.value == "") {
			alert("Please supply your email address.");
			f.emailAddress.focus();
		} else if (f.subject.value == "" && f.comments.value == "") {
			alert("Please supply at least a subject line or a comment.");
			f.subject.focus();
		} else {
			f.sendButton.value = "Sending...";
			f.sendButton.disabled = true;

			f.clearButton.disabled = true;

			f.submit();
		}
		break;

	case 'clear':
		f.sendButton.value = "Send Comments";
		f.sendButton.disabled = false;
		f.clearButton.disabled = false;

		f.senderName.focus();
		break;
	}
}