#menuContainer {/*position:absolute; left:0; top:139px;*/}
#menu {text-align:center; list-style:none; margin: 0px auto; padding: 0; height:35px; width:598px;}
#menu li {float:left; margin-top:1px; margin-left:1px; padding-top:2px;}
#menu li a, #menu li span {display:block; height:32px; line-height:32px; padding:0 12px 0 0; float:left; background: url(../img/tab_a.png) no-repeat right top; font-family:Tahoma; font-size:12px; color:#000; text-decoration:none;}
#menu li a b, #menu li span b {display:block; height:32px; float:left; padding:0 0 0 12px; background: url(../img/tab_b.png) left top; cursor:pointer;}

#menu li a:hover, 
#menu li a:active,
#menu li a:focus,
#menu li span
{
	background-position:right -33px; 
	height:32px;
}

#menu li a:hover b,
#menu li a:active b,
#menu li a:focus b,
#menu li span b
{
	background-position:left -33px; 
	height: 32px;
}