Dealing with the player's click

Here's my klick function:

klick() in functions.js
function klick(el) {
  var el_answer=document.getElementById(g_answer_id);
  el_answer.style.backgroundColor='palegreen';
  var id=el.id;
  if (id!=g_answer_id) {
    el.style.backgroundColor='red';
  }
}

Check that this works ok.

Before moving on to multiple questions, we'll need a function to reset the background colours. Here's mine:

clear() in functions.js
function clear() {
  for (var i=0;i<5;i++) {
    var el=document.getElementById(i);
    el.style.backgroundColor='beige';
  }
}