.colorsphere {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0;
    padding: 0;
    border: 0;
    cursor: crosshair;
    -moz-user-select: none;
    -khtml-user-select: none;
    user-select: none;
    z-index: 100;
    background: transparent url(circle-150.png) top left no-repeat;
}

.colorsphere-pointer {
    position: absolute;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent url(pointer.gif) top left no-repeat;
    height: 9px;
    width: 9px;
    z-index: 101;
}