$(function() {
      $('.slider-for').slick({
        slidesToShow: 1,
        slidesToScroll: 3,
        arrows: true,
        fade: true,
        asNavFor: '.slider-nav'
      });
      $('.slider-nav').slick({
        slidesToShow: 3,
        slidesToScroll: 3,
        asNavFor: '.slider-for',
		// centerMode: true,
		focusOnSelect: true,
		vertical: true,
		dots: true,
      });

		$('.prev-leader-box .slick-arrow').each(function(e){
		   var $this =$(this);
		   $this.addClass('iconfont');
		   $this.text('');
		   if($this.hasClass('slick-prev')){
		     $(this).addClass('icon-zuo')
		   }else if($this.hasClass('slick-next')){
		     $(this).addClass('icon-you')
		   }  
		   });
				
  });