JSFiddle - React, Tailwind, and code Playground
HTML
<div id="main">
<div id="slider">
<img src=""/>
</div>
<div class="clear slider"></div>
<div class="slider ndslider">
<a href="#" rel="bookmark">
<img src="#" title=""/>
</a>
</div>
<div class="slider rdslider">
<a href="" rel="bookmark">
<img src="" title=""/>
</a>
</div>
<div class="slider thslider nivoSlider">
<a rel="bookmark" href="" class="nivo-imageLink" >
<img src="http://www.google.com/intl/en_ALL/images/srpr/logo1w.png" >
</a>
<a rel="bookmark" href="" class="nivo-imageLink">
<img title="" src="http://foursquare.com/img/headerLogo.png">
</a>
<a rel="bookmark" href="#" class="nivo-imageLink">
<img title="" src="http://www.google.com/intl/en_ALL/images/srpr/logo1w.png">
</a>
<div class="nivo-slice"></div>
<div class="nivo-slice"></div>
<div class="nivo-slice"></div>
<div class="nivo-directionNav">
<a class="nivo-prevNav">Prev</a>
<a class="nivo-nextNav">Next</a>
</div>
<div class="nivo-controlNav">
<a rel="0" class="nivo-control active">
<img alt="" src="undefined">
</a>
<a rel="1" class="nivo-control">
<img alt="" src="undefined">
</a>
<a rel="2" class="nivo-control">
<img alt="" src="undefined">
</a>
</div>
</div>
</div>
JavaScript
jQuery('.thslider .nivo-imageLink img').each(function (idx) {
// idx is the index of the image, use the same index for thumbs:
var $thumb = jQuery(".thslider .nivo-controlNav a img").eq(idx);
$thumb.attr('src', 'http://saorabh-test1.rtcamp.info/wp-content/themes/twentyten/timthumb.php?src='+ encodeURIComponent(this.src) +'&h=50&w=50&zc=1');
});