Finding out the opacity of an image?

Finding out the opacity of an image?

Hi, if I have four images in set up like this:

  1. <div id="holder">
  2. <img src="assets/1.png" style="opacity:1";
  3. <img src="assets/2.png" style="opacity:1";
  4. <img src="assets/3.png" style="opacity:0.3";
  5. <img src="assets/4.png" style="opacity:1";
  6. </div>


Is it possible to filter and return the number of images that has not got its opacity set to 1?

Thanks in advance.