function killValue(obj, val) {
	obj.value = val;
}

function mailValue(obj, val) {
	if (obj.value == '')
		obj.value = val;
}

function checkForm(obj) {
	var sendOK;
	
	sendOK = true;
	if (obj.txtName.value == '') {
		alert('Please enter your name.');
		sendOK = false;
	}
	else if (obj.txtEmail.value == '') {
		alert('Please enter your email address.');
		sendOK = false;
	}
	else if (obj.txtEnquiry.value == '') {
		alert('Please enter your enquiry.');
		sendOK = false;
	}
	
	return sendOK;
}