Allow Flexslider inside bootstrap tabs

/* Property details slider */
	$('#property-thumbs').flexslider({
    animation: "slide",
    controlNav: false,
    animationLoop: false,
    slideshow: false,
    itemWidth: 60,
    itemMargin: 10,
    asNavFor: '#property-images',            
	prevText: "",          
	nextText: ""
  });
   
  $('#property-images').flexslider({
    animation: "slide",
    controlNav: false,
    animationLoop: false,
    slideshow: true,
    sync: "#property-thumbs",            
	prevText: "",          
	nextText: ""
  });

  /* Property details slider2 */
 $('#secondary-property-thumbs').flexslider({
    animation: "slide",
    controlNav: false,
    animationLoop: false,
    slideshow: false,
    itemWidth: 60,
    itemMargin: 10,
    asNavFor: '#secondary-property-images',            
	prevText: "",          
	nextText: ""
  });
   


  $('#secondary-property-images').flexslider({
    animation: "slide",
    controlNav: false,
    animationLoop: false,
    slideshow: true,
    sync: "#secondary-property-thumbs",            
	prevText: "",          
	nextText: ""
  });


  /*ALLOW TABS*/ 
$(document).on('shown.bs.tab', 'a[data-target="#fplan"]', function (e) {
     $('#secondary-property-images').flexslider();
});

<div class="tabs">
  <ul class="nav nav-tabs">
    <li class="active"> <a data-toggle="tab" href="#slider">{lang_media_slider}</a> </li>
    <li> <a data-toggle="tab" href="#fplans">{lang_media_plans} </a> </li> 
    <li> <a data-toggle="tab" href="#video">{lang_media_video} </a> </li>
    <li> <a data-toggle="tab" href="#360">{lang_media_360} </a> </li>

  </ul><!--nav tabs end-->
<!-- Tab Content-->
<div class="tab-content">

<div id="fplans" class="tab-pane">
<!-- FLOOR PLANS-->
<div class="property-slider2">

 <div id="secondary-property-images" class="flexslider">
                  <ul class="slides">
                    <li class="item"> <img src="[URL unfurl="true"]http://placehold.it/600x400&amp;text=IMAGE+PLACEHOLDER"[/URL] alt=""> </li>
                    <li class="item"> <img src="[URL unfurl="true"]http://placehold.it/600x400&amp;text=IMAGE+PLACEHOLDER"[/URL] alt=""> </li>
                    <li class="item"> <img src="[URL unfurl="true"]http://placehold.it/600x400&amp;text=IMAGE+PLACEHOLDER"[/URL] alt=""> </li>
                    <li class="item"> <img src="[URL unfurl="true"]http://placehold.it/600x400&amp;text=IMAGE+PLACEHOLDER"[/URL] alt=""> </li>
                  </ul>
              </div>

                <div id="secondary-property-thumbs" class="flexslider">
                  <ul class="slides">
                    <li class="item"> <img src="[URL unfurl="true"]http://placehold.it/600x400&amp;text=IMAGE+PLACEHOLDER"[/URL] alt=""> </li>
                    <li class="item"> <img src="[URL unfurl="true"]http://placehold.it/600x400&amp;text=IMAGE+PLACEHOLDER"[/URL] alt=""> </li>
                    <li class="item"> <img src="[URL unfurl="true"]http://placehold.it/600x400&amp;text=IMAGE+PLACEHOLDER"[/URL] alt=""> </li>
                    <li class="item"> <img src="[URL unfurl="true"]http://placehold.it/600x400&amp;text=IMAGE+PLACEHOLDER"[/URL] alt=""> </li>
                  </ul>
                </div>
</div>
  </div><!-- Floor plan id end-->