.buttonfixed{
display:block;
_display:none;
position:fixed;
z-index:9999;
text-indent:-9999px;
overflow:hidden;
outline:none;
top:55px;
}
  .feed1{
background:url('img/feed1.png') no-repeat 0 0; width:32px; height:32px;
}
  .twit1{
background:url('img/twit1.png') no-repeat 0 0; width:32px; height:32px;
}
.buttonfixed:hover{
top:40px;
}