// copyright 1999 Idocs, Inc. http://www.idocs.com
// Distribute this script freely but keep this notice in place
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);
	// control keys
	if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27) )
		return true;
	// numbers
	else if ((("0123456789").indexOf(keychar) > -1))
		return true;
	// decimal point jump
	else if (keychar == ".")
		return true;
	return false;
}
