function isDigits(obj)
	{
	re = /\D+/;
	if (re.test(obj.value))
		{
		focusObj(obj);
		alert("Only digits allowed.");
		return false;
		}
	return true;
	}
function isNumber(obj)
	{
	if (arguments.length>1) {re = /^-{0,1}(\d|,)*\.{0,1}\d{0,3}$/}
	else {re = /^-{0,1}(\d|,)*\.{0,1}\d*$/}
	if (re.test(obj.value)==false)
		{
		if (obj.name.substr(0,3)=="cur") {msg = "Dollar amounts only."}
		else {msg = "A numeric entry is required."}
		focusObj(obj);
		alert(msg);
		return false;
		}
	return true;
	}