     if @position == 1
       if prev_section != null
         @$('.sequence-nav-buttons .prev a').removeClass('disabled').click(()=>
-          window.location.href=prev_section
+          #20151026b Add parameter 0 at the end of url
+          window.location.href = prev_section + "0"
         )
       else
         @$('.sequence-nav-buttons .prev a').addClass('disabled')

    if @position == @contents.length
      if next_section != null
        @$('.sequence-nav-buttons .next a').removeClass('disabled').click(()=>
          window.location.href=next_section
        )
      else
        @$('.sequence-nav-buttons .next a').addClass('disabled')

      # On Sequence change, fire custom event "sequence:change" on element.
      # Added for aborting video bufferization, see ../video/10_main.js
      @el.trigger "sequence:change"
      #20151026b If the parameter from url equal to "0", then change the value of new_positon and save to DB
      if @prev_button_para == "0"
        @prev_button_para = null
        new_position = @num_contents
        modx_full_url = @modx_url + '/' + @id + '/goto_position'
        $.postWithPrefix modx_full_url, position: new_position
      @mark_active new_position
      @$('#seq_content').html @contents.eq(new_position - 1).text()
      XModule.loadModules(@$('#seq_content'))
