.social a {
    display: block;
    float: left;
    width: 16px;
    height: 16px;
    overflow: hidden;
    text-indent: 100em;
    margin: 5px 6px 0 0;
 }
.social .icon-twitter {
  background: url("../img/twitter_16.png") no-repeat scroll 0 0 transparent;
}
.social .icon-yahoo {
  background: url("../img/yahoo_16.png") no-repeat scroll 0 0 transparent;
}
.social .icon-fb {
  background: url("../img/facebook_16.png") no-repeat scroll 0 0 transparent;
}
.social .icon-comment {
  background: url("../img/ballon.png") no-repeat scroll 0 0 transparent;
}
.social .icon-google {
  background: url("../img/google_16.png") no-repeat scroll 0 0 transparent;
}