How to get the children of the $(this) selector?

The jQuery constructor accepts a 2nd parameter called context which can be used to override the context of the selection.

jQuery("img", this);

Which is the same as using .find() like this:

jQuery(this).find("img");

If the imgs you desire are only direct descendants of the clicked element, you can also use .children():

jQuery(this).children("img");

You could also use

$(this).find('img');

which would return all imgs that are descendants of the div

If you need to get the first img that's down exactly one level, you can do

$(this).children("img:first")

If your DIV tag is immediately followed by the IMG tag, you can also use:

$(this).next();