<div id="carousel_1" class="carousel slide">
<a href="#carousel_1" class="left carousel-control" data-slide="prev"></a>
<a href="#carousel_1" class="right carousel-control" data-slide="next"></a>
</div>
<div id="carousel_2" class="carousel slide">
<a href="#carousel_2" class="left carousel-control" data-slide="prev"></a>
<a href="#carousel_2" class="right carousel-control" data-slide="next"></a>
</div>