Wizard With Progress Bar using events

HTML

<div id="rootwizard">
	<div class="navbar">
	  <div class="navbar-inner">
	    <div class="container">
	<ul>
	  	<li><a href="#tab1" data-toggle="tab">First</a></li>
		<li><a href="#tab2" data-toggle="tab">Second</a></li>
		<li><a href="#tab3" data-toggle="tab">Third</a></li>
		<li><a href="#tab4" data-toggle="tab">Forth</a></li>
		<li><a href="#tab5" data-toggle="tab">Fifth</a></li>
		<li><a href="#tab6" data-toggle="tab">Sixth</a></li>
		<li><a href="#tab7" data-toggle="tab">Seventh</a></li>
	</ul>
	 </div>
	  </div>
	</div>
    <div id="bar" class="progress">
      <div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="width: 0%;"></div>
    </div>
	<div class="tab-content">
	    <div class="tab-pane" id="tab1">
	      1
	    </div>
	    <div class="tab-pane" id="tab2">
	      2
	    </div>
		<div class="tab-pane" id="tab3">
			3
	    </div>
		<div class="tab-pane" id="tab4">
			4
	    </div>
		<div class="tab-pane" id="tab5">
			5
	    </div>
		<div class="tab-pane" id="tab6">
			6
	    </div>
		<div class="tab-pane" id="tab7">
			7
	    </div>
		<ul class="pager wizard">
			<li class="previous first" style="display:none;"><a href="#">First</a></li>
			<li class="previous"><a href="#">Previous</a></li>
			<li class="next last" style="display:none;"><a href="#">Last</a></li>
		  	<li class="next"><a href="#">Next</a></li>
		</ul>
	</div>
</div>

JS

$(document).ready(function() {
  	$('#rootwizard').bootstrapWizard({onTabShow: function(tab, navigation, index) {
		var $total = navigation.find('li').length;
		var $current = index+1;
		var $percent = ($current/$total) * 100;
		$('#rootwizard .progress-bar').css({width:$percent+'%'});
	}});
});