How can I change the number in the pager string using the jQuery plugin bxSlider?

I'm using a plugin called bxSlider. It's a nice little image slider plugin wi开发者_如何学Pythonth a very handy API.

I was wondering if there is a way of changing the number of slides that will be displayed in the pager string. I'm looking to add a blank slide at the end, but I don't want it to display in the navigation. EG;

I have five slides (four with content and one blank) and I want the pager to display 1/4.

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You can change the number of slides by adding/removing li's from the content

<ul id="slider1">
  <li>Slide one content</li>
  <li>Slide two content</li>
  <li>Slide three content</li>
  <li>And so on...</li>
</ul>

Perhaps that is not what you meant though by 'the pager string'? Please clarify