如何叠加两个透明背景图像

Question

I need to overlay few background images, of two different divs, I am using transparent PNGs but when I overlay one over the other the second adds some annoying white background over the first and the effect is lost. I have read somewhere that this might be due to the alpha channel, but did not have any info for the walkthrough. Could someone point me to a solution ?

Please Note I am using a sprite and take both images from there, jQuery is included as well (so I will accept JS or jQuery solution), I need to use a transparent images, cannot use opaque, cannot combine the images. I currently I am using z-index: 1; for the bottom layer and z-index:2; for the top, probably will have a third one so the solution should not be centered over overlaying two images, but to overlay 2+ images.

Thanks!

The Image I am using

Added a fiddle with comment in the JS section

A screenshot of the result notice the white between the leafs in the left upper corner and it is supposed to be a 35px square containing a little dirt

Solution:

By using CSS and adding background-color: transparent; I have removed the background color of the divs and obtained full transperancy

Answer 1

A div is not necessarily transparent by default. It inherits the background of it's parent. Which is most likely white, and not transparent..

Try:

<div style="background-color: rgba(255, 0, 0, 0.5)">.........</div>