.rss-popup {
    padding: 0;
    width: 64px;
    position: relative;
    float:left;
}
 
div.rss-popup em {
    background: url(images/mcrphotos.png) no-repeat;
    width: 172px;
    height: 57px;
    position: absolute;
    top: 70px;
    left: -56px;
    text-align: center;
    text-indent: -9999px;
    z-index: 2;
    display: none;
}
 
#rss-icon {
    width: 73px;
    height: 61px;
    background: url(images/networkimg_01.jpg) no-repeat 0 0;
    text-indent: -9999px;
    margin: 0 auto;
    display: block;
}



.rss-popup2 {
    padding: 0;
    width: 73px;
    position: relative;
    float:left;
}
 
div.rss-popup2 em {
    background: url(images/mcrmedia.png) no-repeat;
    width: 172px;
    height: 57px;
    position: absolute;
    top: 70px;
    left: -56px;
    text-align: center;
    text-indent: -9999px;
    z-index: 2;
    display: none;
}
 
#rss-icon2 {
    width: 73px;
    height: 61px;
    background: url(images/networkimg_02.jpg) no-repeat 0 0;
    text-indent: -9999px;
    margin: 0 auto;
    display: block;
}


.rss-popup3 {
    padding: 0;
    width: 60px;
    position: relative;
    float:left;
}
 
div.rss-popup3 em {
    background: url(images/chemicaltube.png) no-repeat;
    width: 172px;
    height: 57px;
    position: absolute;
    top: 70px;
    left: -56px;
    text-align: center;
    text-indent: -9999px;
    z-index: 2;
    display: none;
}
 
#rss-icon3 {
    width: 73px;
    height: 61px;
    background: url(images/networkimg_03.jpg) no-repeat 0 0;
    text-indent: -9999px;
    margin: 0 auto;
    display: block;
}



.rss-popup4 {
    padding: 0;
    width: 52px;
    position: relative;
    float:left;
}
 
div.rss-popup4 em {
    background: url(images/cadastro.png) no-repeat;
    width: 172px;
    height: 57px;
    position: absolute;
    top: 70px;
    left: -56px;
    text-align: center;
    text-indent: -9999px;
    z-index: 2;
    display: none;
}
 
#rss-icon4 {
    width: 73px;
    height: 61px;
    background: url(images/networkimg_04.jpg) no-repeat 0 0;
    text-indent: -9999px;
    margin: 0 auto;
    display: block;
}