#HeaderNavi{ position: absolute; top: 60px; left: 550px; clear:both; width: 530px; height: 53px; }
#HeaderNavi ul{ float:left; width:550px; height:53px; list-style-type:none; }
#HeaderNavi ul li{ float:left; height:53px;}
#HeaderNavi ul li a{ border:0; height:53px; display:block; line-height:53px; text-indent:-9999px; }
#HeaderNavi ul li#a a{width:110px;background-position:0 0;}
#HeaderNavi ul li#b a{width:130px;background-position:-110px 0;}
#HeaderNavi ul li#c a{width:160px;background-position:-240px 0;}
#HeaderNavi ul li#d a{width:140px;background-position:-381px 0;}
#HeaderNavi ul li#a a:hover, #HeaderNavi ul li#a a.on{background-position:0 -53px;}
#HeaderNavi ul li#b a:hover, #HeaderNavi ul li#b a.on{background-position:-110px -53px;}
#HeaderNavi ul li#c a:hover, #HeaderNavi ul li#c a.on{background-position:-240px -53px;}
#HeaderNavi ul li#d a:hover, #HeaderNavi ul li#d a.on{background-position:-381px -53px;}