$().ready(function() {

    $('.style19').each(function() {
        
      var tis = $(this),  state = false, answer = tis.next('div').hide().css('height','auto').slideUp()
                           
        tis.click(function() {
            state =  !state; 
            answer.slideToggle(state);
            tis.toggleClass('active',state);
        });
    });

});