CSS自定義右鍵菜單

<style>
      .menu {
            width: 100px;
            font-size: 14px;
            font-family: "微軟雅黑";
            border: 1px solid #ccc;
            z-index: 9999;
            position: absolute;
            display: none;
            background: #f2f2f2;
        }

        .menu ul {
            margin: 0px;
            padding: 0px;
            text-align: center;
            list-style-type: none;
        }

        .menu ul li {
            padding: 3px 0px;
            font-size: 12px;
        }

        .menu ul li:hover {
            background: #e1dddd;
        }

        .menu ul li a:link {
            color: #000;
            text-decoration: none;
        }
    </style>

<!--右側菜單-->
<div id="divmenu" class="menu">
    <ul>
        <li onclick="expand_all()" class="pub">展開全部</li>
        <li onclick="collapse_all()" class="pub">合併全部</li>
        <li onclick="zoomIn()" class="pub">畫布放大</li>
        <li onclick="zoomOut()" class="pub">畫布縮小</li>
        <li onclick="add_node();" class="add">新增節點</li>
        <li onclick="openWin();" class="view">預覽</li>
        <li onclick="update_node();" class="update">變動</li>
        <li onclick="add_upfile();" class="upload">上傳圖紙</li>
        <li onclick="show_selected();" class="sel">查看節點</li>
        <li onclick="remove_node()" class="delete">刪除</li>
    </ul>
</div>

<script type="text/javascript"> 
    $("body").bind("contextmenu", function () {

     $("#divmenu").css({ "left": document.body.scrollLeft + event.clientX - 125, "top": 

       document.body.scrollTop + event.clientY - 60 }).show();

      return false;
       });
</script>