проблема с hover в ff 3 - Вопросы по CSS

 #fish1 li ul li a:hover  
{
	background-image: url(../images/arr.jpg);
	background-repeat: no-repeat;
	background-position: 0px 5px;
	text-decoration: underline;
}

#fish1 li ul li a:visited 
{
	background-image: url(../images/arr.jpg);
	background-repeat: no-repeat;
	background-position: 0px 5px;
	text-decoration:none;
}

ul#fish1 li ul li a span
{
position:relative;
left:20px;
}

#fish1 li ul li a span {
padding-left:20px;
}

#fish1 li ul li a span {
display:block;
margin-left:20px;
}