function checkFields(formElm) {
	var error = false;
	if (!checkField(formElm.name)) error = true;
	if (!checkField(formElm.email) & !checkField(formElm.busPhone)) error = true;
	if (!checkEmail(formElm.email)) error = true;
	return !error;
}
function checkField(fieldElm) {
	var errorElm = document.getElementById(fieldElm.id+'Error');
	if (!fieldElm.value) {
		errorElm.style.display = 'block';
		return false;
	} else {
		errorElm.style.display = 'none';
		return true;
	}
}
function checkEmail(fieldElm) {
	var errorElm = document.getElementById(fieldElm.id+'Error');
	if (/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/.test(fieldElm.value)) {
		errorElm.style.display = 'none';
		return true;
	} else {
		errorElm.style.display = 'block';
		return false;
	}
}