Different HMLT next button markup when plugin is working

Hello,

I’ve got usual WP prev/next pagination as following:

<div id="pagination">
    <div class="next"><?php next_posts_link('Next') ?></div>
    <div class="previous"><?php previous_posts_link('Previous') ?></div>
 </div>

I’ve specified all the classes for the plugin and it works fine and only displays the “Next” button for loading more posts.

However, I would like to change HTML markup of the pagination when plugin works, or at least change the text of the next link from “Next” to “Load More” and add a class to the next HMLT element.

How can I achieve this?

Many thanks, Dasha

http://wordpress.org/extend/plugins/infinite-scroll/