#navigation ul li a:hover { background-image: url(../images/nav_active_center.png); background-repeat: repeat-x; }
#navigation ul li a:hover span.bg span { width: 100%; height: 100%; }
#navigation ul li a:hover span.bg span.left { background-image: url(../images/nav_active_left.png); }
#navigation ul li a:hover span.bg span.right { background-image: url(../images/nav_active_right.png); }