function prepareInputsForHints() {

  var inputs = document.getElementsByClassName("hintLink");

  for (var i=0; i<inputs.length; i++){
    inputs[i].onclick = function () {
      this.parentNode.getElementsByTagName("span")[0].style.display = "inline";
      return(false);
    }
    inputs[i].onblur = function () {
      this.parentNode.getElementsByTagName("span")[0].style.display = "none";
    }
  }
}