How to know when all images inside a specific "div" are loaded?

Part of my HTML page is the following div:

<div id="images_wrapper">
  <img ... />
  <img ... />
  <img ... />
  ...
</div>

Initially, this div is hidden, and I show it only when all images are loaded:

$(window).load(show_images_wrapper);

However, if I'm not mistaken, show_images_wrapper will be called only when all the page is loaded. I would like show_images_wrapper to be called as soon as all images inside images_wrapper has been loaded, and don't wait until all the page is loaded.

I tried:

$("#images_wrapper").load(show_images_wrapper);

but it didn't work.

How should I do this?