function numbers(object)
{	
	if (document.all) var c = event.keyCode;
	else var c = event.charCode;
	if((c < 58 && c > 47) || c == 45 || c == 46 || c == 44) return true;
	else return false;	
}

function imposeMaxLength(Object, MaxLen)
{
  return (Object.value.length <= MaxLen);
}