function checkNull(objName, LangId)
{
	var numberfield = objName;
	if (chkNull(objName, LangId) == false)
	{
		numberfield.select();
		numberfield.focus();
		return false;
	}
	else
	{
		return true;
	}
}

function chkNull(objName, LangId)
{
var invalidStr = "" 
var checkStr = objName;
var allValid = true;
var decPoints = 0;
var allNum = "";

if (checkStr.value == invalidStr)
{
	allValid = false;
	
}
if (!allValid)
{	
if (LangId == 2)
	alertsay = "請輸入有效之字串"
else
	alertsay = "Please Enter a Value"
alert(alertsay);
return (false);
}
}