如何找出显示的图像i。可见，哪些图像是用jquery隐藏的?

I have 5 images on my page. These images are layered on each other using Z-index in css class. Out of these 5 images I have assigned a css class to 4 images and for one image i.e. first image img1 I have added css effect using style property in image tag only. Now out of these 5 images first image img1 is always visible and out of remaining 4 images only 1 image is visible and other three images remain hidden. These 4 images I have assigned a css class. I have 5 images on my page. These images are la