egExp(real_answers.join("|"))
    if (answer_regex.test(my_answer)) {
      cl.add("webex-correct");
    }
  }

  update_total_correct();
}

/* function for checking select answers */
select_func = function(e) {
  console.log("webex: check select");
  
  var cl = this.classList
  
  /* add style */
  cl.remove("webex-incorrect");
  cl.remove("webex-correct");
  if (this.value == "answer") {
    cl.add("webex-correct");
  } else if (this.value != "blank") {
    cl.add("webex-incorrect");
  }
  
  update_tota