a#vverh.up{
    display: inline-block;
    position: absolute;
    width: 113px;
    height: 39px;
    left: -10000px;
    bottom: -10000px;
    background: url(up.png) center no-repeat;
    z-index: 1000;
    opacity: 0;
    filter: alpha(opacity=0);
    -moz-opacity: 0;
    transition: opacity .3s;
    -webkit-transition: opacity .3s;
    -moz-transition: opacity .3s;
    -o-transition: opacity .3s;
}
a#vverh.up.on{
    opacity: .8;
    filter: alpha(opacity=80);
    -moz-opacity: .8;
    opacity: 1;
    filter: alpha(opacity=100);
    -moz-opacity: 1;
    position: fixed;
    bottom: 20px;
    right: 20px;
    left: auto;
}