function valid(frm) {
	if (frm.txtName.value == "") {
		alert("กรุณาใส่ ชื่อด้วยค่ะ");
		frm.txtName.focus();
		return false;
	}

	if (frm.txtEmail.value == "") {
		alert("กรุณาใส่ อิเมล์ด้วยค่ะ");
		frm.txtEmail.focus();
		return false;
	}

	if (frm.txtSubject.value == "") {
		alert("กรุณาใส่ หัวข้อด้วยค่ะ");
		frm.txtSubject.focus();
		return false;
	}

	if (frm.txtDetail.value == "") {
		alert("กรุณาใส ่รายละเอียดด้วยค่ะ");
		frm.txtDetail.focus();
		return false;
	}

	return true;
}

function openWind(theURL, Title, W, H) {
	wname = Title;
	windowX = Math.ceil((window.screen.width - W) / 2);
	windowY = Math.ceil((window.screen.height - H) / 2);
	window.open(theURL, wname, "scrollbars=yes, toolbar=no, location=0, directories=no, status=no, menubar=0, width="+W+", height="+H+", left="+windowX+", top="+windowY);
}