whole_func_string: function $id(c) {
    if (isWindow(c)) return document.documentElement;
    if (/string|object/.test(typeof c)) {
      return typeof c == 'string' ? document.getElementById(c) : c.nodeType ? c : ''
    }
  }
func_code_string: function $id(c) {
    if (isWindow(c)) return document.documentElement;
    if (/string|object/.test(typeof c)) {
      return typeof c == 'string' ? document.getElementById(c) : c.nodeType ? c : ''
    }
  }
func_documentation_string: /*getElementById
  @param {String} id ID值