code: function (rw) {
    var result
    var rgsize = createEl.register.length
    var i
    for (i = 0;i < rgsize; i++) {
      if (createEl.register[i].rawName === rw) result = createEl.register[i].classid
    }
    return result
  }
docs: (rw → string)
  return string
  - check and get class ID