swapClass() 요거 재미남

# css 설정
<style type="text/css">
  .roll {
        background-color: #7f7f7f;
        color: #3366cc;
  }

  .over {
        background-color: #3355cc;
        color: #3366cc;
        cursor: hand;
  }

</style>


# html에서 사용
OnMouseOver="swapClass(this, 'over')"
OnMouseOut="swapClass(this, 'roll')"

# javascript 설정
 function swapClass(obj, cls) {
        obj.className = cls
   }