Finding Image and Place into another img source 
My Html Markup is like this

    <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="image src" >
        </a>
        <a rel="bookmark" href="" class="nivo-imageLink">
            <img title="" src="">
        </a>
        <a rel="bookmark" href="#" class="nivo-imageLink">
            <img title="" src="">
        </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>
       </div>
    </div>
    </div>

--------------------
I want to find the all the images inside this DIV

    <div class="slider thslider nivoSlider">
          
    </div>

and set that images on to this 

    <div class="nivo-controlNav">
          <a rel="0" class="nivo-control active">
              <img alt="" src="undefined">
          </a>
    </div>

For Doing the same i had written my custom jQuery but it is not working.

   

    jQuery(document).ready(function() {
         jQuery('.thslider a img').each(function(){
                var imgSrc = jQuery(this).attr('src');
                var newSrc = 'http://saorabh-test1.rtcamp.info/wp-content/themes/twentyten/timthumb.php?src='+ imgSrc +' &h=50&w=50&zc=1';
                jQuery(".thslider .nivo-controlNav a img").attr('src',newSrc);
               
            });
        });

Help me..
Finding Image and Place into another img source 
===

My Html Markup is like this

    <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="image src" >
        </a>
        <a rel="bookmark" href="" class="nivo-imageLink">
            <img title="" src="">
        </a>
        <a rel="bookmark" href="#" class="nivo-imageLink">
            <img title="" src="">
        </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>
       </div>
    </div>
    </div>

--------------------
I want to find the all the images inside this DIV

    <div class="slider thslider nivoSlider">
          
    </div>

and set that images on to this 

    <div class="nivo-controlNav">
          <a rel="0" class="nivo-control active">
              <img alt="" src="undefined">
          </a>
    </div>

For Doing the same i had written my custom jQuery but it is not working.

   

    jQuery(document).ready(function() {
         jQuery('.thslider a img').each(function(){
                var imgSrc = jQuery(this).attr('src');
                var newSrc = 'http://saorabh-test1.rtcamp.info/wp-content/themes/twentyten/timthumb.php?src='+ imgSrc +' &h=50&w=50&zc=1';
                jQuery(".thslider .nivo-controlNav a img").attr('src',newSrc);
               
            });
        });

Help me..