#ID_OF_ELEMENT {
    padding: HEIGHT_OF_IMAGEpx 0 0 0;
    overflow: hidden;
    background-image: url("hello_world.gif");
    background-repeat: no-repeat;
    
    height: 0px !important;
    height /**/:HEIGHT_OF_IMAGEpx;
}

Hello world!

let's say the height of the image is 35, the code will be
#replaceMe {
    padding: 35px 0 0 0;
    overflow: hidden;
    background-image: url("hello_world.gif");
    background-repeat: no-repeat;
    
    height: 0px !important;
    height /**/:35px;
}