function checkForm() {
	var req_name = true;
	var req_email = true;
	var req_message = true;
	thisform = eval('window.document.emailUs');

	var errStr ='';

	if (req_name && thisform.name.value == '') {
		errStr += '- Name not supplied\n';
	}
	if (req_email && thisform.email.value == '') {
		errStr += '- Email address not supplied\n';
	}
	if (req_message && thisform.message.value == '') {
		errStr += '- Message not supplied';
	}
	
	if (errStr == "") {
		return true;
	}
	else {
		errStr = 'Please correct the following errors:\n' + errStr;
		alert(errStr);
		return false;
	}
}