.logocit
{
	height:50px;
	width:120px; 
	background-image:url('../img/btn/cit_over.png');
	background-repeat:no-repeat;
}
.logocit:hover
{
	height:50px;
	width:120px; 
	background-image:url('../img/btn/cit.png');
	background-repeat:no-repeat;
}

.mail
{
	height:50px;
	width:50px; 
	background-image:url('../img/btn/_@.png');
	background-repeat:no-repeat;
	vertical-align:middle;
}

.mail:hover
{
	height:50px;
	width:50px; 
	background-image:url('../img/btn/_@_over.png');
	background-repeat:no-repeat;
	vertical-align:middle;
}

.www
{
	height:50px;
	width:50px; 
	background-image:url('../img/btn/www.png');
	background-repeat:no-repeat;
	vertical-align:middle;
}

.www:hover
{
	height:50px;
	width:50px; 
	background-image:url('../img/btn/www_over.png');
	background-repeat:no-repeat;
	vertical-align:middle;
}