.styled-v-bar{ /* sample CSS class for a different vertical scrollbar look */
    background:    url("../img/custom-scroll-bar.png") center top no-repeat;
    width: 10px;
    margin-right: 0;
    margin-bottom: 4px;
}

.styled-v-bar ins{ /* Style for the "ins" inner element, or bottom of the scrollbar */ 
    display: block;
    background:    url("../img/custom-scroll-bar.png") center bottom no-repeat;
    width: 10px;
    height: 4px;
    position: absolute;
    top: 100%;
}