.facebook{width:56px;height: 56px;background: url(fFZLyWv.png) 0 0;}
.twitter{width:56px;height: 56px;background: url(fFZLyWv.png) 0 -112;}
.gplus{width:56px;height: 56px;background: url(fFZLyWv.png) 0 -224;}
.ytube{width:56px;height: 56px;background: url(fFZLyWv.png) 0 -336;}
.facebook:hover{width:56px;height: 56px;background: url(fFZLyWv.png) 0 -56;}
.twitter:hover{width:56px;height: 56px;background: url(fFZLyWv.png) 0 -168;}
.gplus:hover{width:56px;height: 56px;background: url(fFZLyWv.png) 0 -280;}
.ytube:hover{width:56px;height: 56px;background: url(fFZLyWv.png) 0 -392;}