Target img src inside a div
http://stackoverflow.com/questions/18439575/how-to-select-img-src-attribute-inside-a-div
<header>
<img src="http://d3a1v57rabk2hm.cloudfront.net/perfumesurprise/tasty_mobile/images/step11.png">
</header>
$( 'header > img' ).attr('src', 'http://images.com/step11.png');
in this case its a header tag, it can be a div too