The following is an example of retrieving the "value" of the second image:
HTML markup:
<div>
<ul>
<li><a href="joy.html"><img src="image1.jpg"/></a></li>
<li><a href="owl.html"><img src="image2.jpg"/></a></li>
</ul>
</div>
jQuery:
var nextImage=$('img[src"bar.jpg"]') //define the starting point
.closest('li') //travel up to the closest list item
.next( ) //move to the next list item
.find('img') //find the image tag in that line
.attr('src'); //grab the source attribute found in the image tag
So now variable nextImage contains image2.jpg.
Note that // are comments that will not be seen by the user.