multiple backgroung images

Ok, so I have been trying to install multiple images for the background in the uni template. I get the first one in, and the second one that I want to stay fixed to the left pushes index page over and I lose the scroll.

So what would be the proper way to install multiple background images.

Everything that I have researched seems to not work on the dolphin

Thanks,

derrick

Commonly, this is easy to have multiple backgrounds (CSS3),

    background-image: url(../images/layer1.png), url(../images/layer2.png), url(../images/layer3.png), url(../images/bg.jpg);
    background-position: center bottom, right top, right bottom, left top;

this is as example

and here are demonstration