Adding a class to a tab panel when the tab is selected

How would i add a script that would add .z-index to the tab-panel that is active?

This is what i have:

<ul class="nav nav-pills pills-round" role="tablist" id="myTab">
<li class="active col-sm-4">Amount<a href="#tab1" role="tab" data-toggle="pill"><span>1</span></a></li>
<li class="col-sm-4"><hr>Name<a href="#tab2" role="tab" data-toggle="pill"><span>2</span></a></li>
<li class="col-sm-4"><hr>Payment<a href="#tab3" role="tab" data-toggle="pill"><span>3</span></a></li>
</ul>

When you select a tab, it opens a panel:

<div class="tab-content" id="myTabContent">
   <div class="tab-pane" id="tab1"></div>
    <div class="tab-pane" id="tab2"></div>
    <div class="tab-pane" id="tab2"></div>
</div>

I tried this script but it doesn't work. Any ideas?

$('.pills-round>li>a').click(function(){
$('.z-index').removeclass('z-index');
$('.active').addclass('z-index');
});
Miriam FisherAsked:
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SammyCommented:
z-index is a reserved word (it is a css property name) you should change that to something else.
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