$(window).load(function() {
$('#carousel').flexslider({
animation: "slide",
controlNav: false,
animationLoop: false,
slideshow: false,
itemWidth: 210,
itemMargin: 5,
asNavFor: '#slider'
});
$('#slider').flexslider({
animation: "slide",
controlNav: false,
animationLoop: false,
slideshow: false,
sync: "#carousel"
});
});
<!-- Place somewhere in the <body> of your page -->
<div id="slider" class="flexslider">
<ul class="slides">
<li>
<img src="slide1.jpg" />
</li>
<li>
<img src="slide2.jpg" />
</li>
<li>
<img src="slide3.jpg" />
</li>
<li>
<img src="slide4.jpg" />
</li>
<!-- items mirrored twice, total of 12 -->
</ul>
</div>
<div id="carousel" class="flexslider">
<ul class="slides">
<li>
<img src="slide1.jpg" />
</li>
<li>
<img src="slide2.jpg" />
</li>
<li>
<img src="slide3.jpg" />
</li>
<li>
<img src="slide4.jpg" />
</li>
<!-- items mirrored twice, total of 12 -->
</ul>
</div>
