function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return(elements);
  }
  if (typeof element == 'string')
    element = document.getElementById(element);
  return(element);
}

function $A(iterable) {
  var result = [];
  for (var i = 0; i < iterable.length; i++)
    if (iterable[i]) result.push(iterable[i]);
  return(result);
}