a#fcbk_tab {
  top: 25%;
  left: 0;
  width: 31px;
  height: 139px;
  color: #FFF;
  cursor: pointer;
  text-indent: -100000px;
  overflow: hidden;
  position: fixed;
  z-index: 100000;
  margin-left: -7px;
  background-image: url(../images/face-become-fan.png);
  _position: absolute;
  _background-image: url(../images/face-become-fan.png); }
  
a#fcbk_tab:hover {
    /*margin-left: -4px;*/
  left:4;
  }
  
a.fcbk_tab_left {
  right: auto !important;
  left: 0 !important;
  margin-right: auto !important;
  margin-left: -4px !important;
  width: 32px !important; 
  }
  
a.fcbk_tab_left:hover {
  width: 32px !important;
  margin-right: auto !important;
  margin-left: 0 !important; 
  }