function changeReview(starIndex, forceReview) {
  TheAnswer = document.getElementById("answer");
  if(TheAnswer.value.length == 0 || forceReview) {
    for(i=1;i<=starIndex;i++) {
      obj = document.getElementById("Rate" + i);
	  
      obj.src = "/img/star_on.gif";
    }

    for (j=starIndex+1;j<=5;j++) {
      obj = document.getElementById("Rate" + j);
      obj.src = "/img/star_off.gif";
    }
  }
}

function selectReview(starIndex) {
  TheAnswer = document.getElementById("answer");
  if(TheAnswer.value.length > 0) {
    changeReview(starIndex, true);
  }
  obj2 = document.getElementById("Rate" + starIndex);
  obj2.src = "/img/star_on_selected.gif";
  TheAnswer.value = starIndex;

}


function checkAnswer() {
  answer= document.getElementById("answer");
  if(answer.value == "") {
    changeReview(0, true);
  }
}