<title>可折疊展開的簡單目錄</title><style>div{font-size:12px;color:red;background-color: #EAEAE8;border: 1 solid #1892B5;padding: 1}</style><div id="main1" style="color:blue" onclick="document.all.child1.style.display=(document.all.child1.style.display =='none')?'':'none'" > + 主目錄1</div> <div id="child1" style="display:none"> <a href="#">- 子目錄1</a> <br> <a href="#">- 子目錄2</a> <br> <a href="#">- 子目錄3</a> <br> <a href="#">- 子目錄4</a> </div> <div id="main2" style="color:blue" onclick="document.all.child2.style.display=(document.all.child2.style.display =='none')?'':'none'" > + 主目錄2 </div> <div id="child2" style="display:none"> <a href="#">- 子目錄1</a> <br> <a href="#">- 子目錄2</a> <br> <a href="#">- 子目錄3</a> </div>