$(document).ready(function(){
  var path_arr = document.URL.split('/');
  path_arr.shift();
  path_arr.shift();
  path_arr.shift();
  var link;
  while(path_arr.length){
    link=$('#navi').find('a[href^=/'+path_arr.join('/')+']');
    if(link.length){
      link.css({
        fontWeight: 'bold',
        color: '#17184b'
      });
      break;
    }
    path_arr.pop();
  }
});