.book { width: 369px; margin: auto; margin-top: 50px; }
.book .bookNav { background-image: url(book/tab_bg.gif); height: 33px; }

.book .bookNav .tab0 { background-image: url(book/tab0.gif); width: 122px; height: 33px; display: block; float: left; }
.book .bookNav .tab1 { background-image: url(book/tab2.gif); width: 129px; height: 33px; display: block; float: left; }

.book .bookNav .taba0 { background-image: url(book/tab0a.gif); width: 122px; height: 33px; display: block; float: left; }
.book .bookNav .taba1 { background-image: url(book/tab2a.gif); width: 129px; height: 33px; display: block; float: left; }

.tabPage { display: none; height: 271px; }
.tabPageSelected { height: 271px; }

.tabPage .images { text-align: center; }