function numbersOnly(myfield, e, dec) {
	var key;
	var keychar;

	if (window.event)
		key = window.event.keyCode;
	else if (e)
		key = e.which;
	else
		return true;

	keychar = String.fromCharCode(key);

	if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27))
		return true;
	else if (((".0123456789").indexOf(keychar) > -1))
		return true;
	else
		return false;
}
function commaFormat(nStr) {
	nStr += '';
	x = nStr.split('.');
	x1 = x[0].replace(/,/g,'');
	x2 = x.length > 1 ? '.' + x[1] : '';
	var rgx = /(\d+)(\d{3})/;
	while (rgx.test(x1)) {
		x1 = x1.replace(rgx, '$1' + ',' + '$2');
	}
	return x1 + x2;
}