fix for partial background coverage

i had a problem in customizing this theme, where the background would only cover the window as far down as i had content, and left it white below that.

to fix this, change the .all section in the css to

html {
        background: url(images/frame-img.php) no-repeat center center fixed;
        -webkit-background-size: cover;
        -moz-background-size: cover;
        -o-background-size: cover;
        background-size: cover;
}