$.fn.wait = function(time, type) {
   time = time || 1000;
   type = type || "fx";
   return this.queue(type, function() {
      var self = this;
      setTimeout(function() {
            $(self).dequeue();
      }, time);
   });
};

$(function(){
   $('#ul-seihin-nav2 li a').click(function(e){
      var clicked = $(e.target);
      var parent = clicked.parent('li[id]');
      if (clicked.hasClass('active')){
         return false;
      }
      $('#ul-seihin-nav2 li a').removeClass('active');
      clicked.addClass('active');
      var mailArea = $('.seihin-main-inner');
      if (mailArea.css('min-height') == '0px' || mailArea.css('min-height') == 'auto'){
         mailArea.css('min-height', mailArea.height() + 'px');
         if ($.browser.msie){
            if (jQuery.browser.version < 7){
               mailArea.css({'height': mailArea.height() + 'px',overflow: 'visible'});
            }
         }
      }
      var openId = 'seihin-' + parent.attr('id').replace('nav2-','');
      $('.seihin-main-inner .item:visible').slideUp(500).end().find('#' + openId).wait(600).slideDown(500);
      return false;
   });
});