2. Include currentpage.js after describe links.<a href="index.php" class="currentpage">toppage</a> | <a href="2.php" class="currentpage">links</a> | <a href="3.php" class="currentpage">profile</a> | <a href="4.php" class="currentpage">bbs</a> | <a href="5.php" class="currentpage">diary</a>