/** css del menu social**/
h2{clear:both;}
#menu_social ul{
	overflow: hidden;
	padding-left: 16em;	
}
#menu_social ul li{
	display: inline;	
}
#menu_social ul li a{
 position: relative;
 display: block;
 float: left;
 width: 100px;
 height: 100px;
 margin-left: 1em;
 -webkit-transition: background .3s ease 0s;
 -moz-transition: background .3s ease 0s;
 -ms-transition: background .3s ease 0s;
 -o-transition: background .3s ease 0s;
 transition: background .3s ease 0s;	      
}
#menu_social ul li a span{
 position: absolute;
 right: -999em;
 font-size: 0;
}
#boton-twitter{background: url(../img/ico_twitter.gif) no-repeat top left;}
#boton-picasa{background: url(../img/ico_picasa.gif) no-repeat top left;}
#boton-google{background: url(../img/ico_google.gif) no-repeat top left;}
#boton-skype{background: url(../img/ico_skype.gif) no-repeat top left;}
#menu_social a.opcion:hover{background-position: bottom left !important;}