<div class="pagination">               
                  <span class="prev"></span>
                  <span class="num" id="1">1</span> 
                  <span class="num_active" id="2">2</span> 
                  <span class="num" id="3">3</span> 
                  <span class="num" id="4">4</span> 
                  <span class="num" id="5">5</span> 
                  <span class="num" id="6">6</span> 
                  <span class="next"></span>
                 </div>
  $('.pagination span').click(function(){
	$(".pagination span").removeClass("num_active").addClass("num"); 
	$(".pagination span:first").removeClass("num").addClass('prev');
	$(".pagination span:last").removeClass("num").addClass('next');
        $(this).addClass("num_active"); 
  });

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