Section 1110.230  Adverse Witness

a)         Any party or witness may be called as an adverse witness.  In such a case, examination of the witness will be allowed as if under cross-examination.

b)         Upon a showing that a witness was called in good faith, and that the party calling him is surprised by his testimony, examination of the witness may proceed as if under cross-examination, and the testimony of the witness may be impeached by prior statements, or otherwise.