.facebook_float
{
    position: fixed;
    top: 47%;
    right: 0px;
    opacity: 0.8;
    z-index: 1000;
    width: 30px;
    height: 90px;
    transition: width 2s, height 2s, right 2s,opacity 1s;
    -moz-transition: width 2s, height 2s,right 2s,opacity 1s, -moz-transform 1s; /* Firefox 4 */
    -webkit-transition: width 2s, height 2s,right 2s,opacity 1s, -webkit-transform 1s; /* Safari and Chrome */
    -o-transition: width 2s, height 2s,right 2s,opacity 1s, -o-transform 1s; /* Opera */
}

.facebook_float:hover
{
    width: 45px;
    height: 135px;
    right: 45px;
    opacity: 1;
    transform: rotate(90deg);
    -moz-transform: rotate(90deg); /* Firefox 4 */
    -webkit-transform: rotate(90deg); /* Safari and Chrome */
    -o-transform: rotate(90deg); /* Opera */
}

.facebook_float img
{
    height: 90px;
    width: 30px;
    transition: width 2s, height 2s;
    -moz-transition: width 2s, height 2s; /* Firefox 4 */
    -webkit-transition: width 2s, height 2s; /* Safari and Chrome */
    -o-transition: width 2s, height 2s; /* Opera */
}
.facebook_float img:hover
{
    width: 45px;
    height: 135px;
}