body{ margin:0 auto; padding:0; font-size:12px; font-family:Arial, Helvetica, sans-serif; background-color:#c0c0c0; color:#303030; line-height:22px}
div,h1,h2,h3,h4,h5,h6{ margin:0; padding:0;}
img{ border:none;}
.clear{ clear:both;}

a:link {color: #303030;text-decoration:none;}     /* 未访问的链接 */
a:visited {color: #303030;text-decoration:none;}  /* 已访问的链接 */
a:hover {color: #303030;text-decoration:none;}    /* 当有鼠标悬停在链接上 */
a:active {color: #303030;text-decoration:none;}   /* 被选择的链接 */

.xb{border-bottom:1px dashed #999999}