How can i set different text buttons in this js

I’m using bxslider to slide list items using jquery:

http://bxslider.com/js/jquery.bxslider2.0.1.min.js

Currently, the option “pager” is set to true. meaning that a nav menu appears underneath with 1, 2, 3 ,4.

I need to replace these numbers with specific text ( 7, 30, 90, 180)
Now i was wondering if it was possible when the js writes these links out, it could use (eg) a name attribute that i could specify for each list item:

<li name=7>…</li>
<li name=30>…</li>
etc…

Where/what would i need to edit in the above js file to achieve this?

Any javascript gurus out there?!