Change the color of the menu item which is selected currently

<div id="menuDiv">
        <ul>
               <li><a href="/site/index">Home</a></li>
               <li><a href="/site/gallery">Gallery</a></li>
        </ul>
</div>
<style>
        #menuDiv ul li a.active{
              color: yellow;
        }
</style>

<script type="text/javascript">
  $(function (){
      var phpPath="<?php echo $_SERVER['REQUEST_URI'] ?>";
      $('#menuDiv ul li a').each(function(){
          var url = $(this).attr('href');
          if(url == phpPath){
              $(this).addClass('active');
          };
       });
  });
</script>