.navigation .social ul li a.fb {
    background-image: url(images/ie8-icon-facebook.png);
} 
.navigation .social ul li a.tw {
    background-image: url(images/ie8-icon-twitter.png);
}
.navigation .social ul li a.in {
    background-image: url(images/ie8-icon-linkin.png);
}
.navigation .social ul li a.ms {
    background-image: url(images/ie8-icon-message.png);
}
.social ul li a.yt {
    background-image: url(images/ie8-icon-youtube.png);
}
.navigation .social ul li a.rss {
    background-image: url(images/ie8-icon-rss.png);
}
.navigation .social ul li a.fb:hover {
    background-image: url(images/ie8-icon-facebook-hover.png);
} 
.navigation .social ul li a.tw:hover {
    background-image: url(images/ie8-icon-twitter-hover.png);
}
.navigation .social ul li a.in:hover {
    background-image: url(images/ie8-icon-linkin-hover.png);
}
.navigation .social ul li a.ms:hover {
    background-image: url(images/ie8-icon-message-hover.png);
}
.social ul li a.yt:hover {
    background-image: url(images/ie8-icon-youtube-hover.png);
}
.navigation .social ul li a.rss:hover {
    background-image: url(images/ie8-icon-rss-hover.png);
}