function search_onclick()
{
	if (document.all("search_text").value=="")
	{
		window.alert("กรุณาระบุเงื่อนไขในการค้นหาด้วยค่ะ!");
		document.all("search_text").focus();
		return;
	}
	document.all("search_form").submit();
}
function popUpWindowCenter(URLStr, width, height)
	{
		LeftPosition = (screen.width) ? (screen.width-width)/2 : 0;
		TopPosition = (screen.height) ? (screen.height-height)/2 : 0;
		
		popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menub ar=no,scrollbars=no,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+LeftPosition+', top='+TopPosition+',screenX='+LeftPosition+',screenY='+TopPosition+'');
}