easyui 添加新頁面

<script>    function createFrame(url) {        var s = '<iframe name="mainFrame" scrolling="auto" frameborder="0"  src="' + url + '" style="width:100%;height:100%;"></iframe>';        return s;    }    function addTab(subtitle, url) {        var jq = top.jQuery;        if (!jq('#tabs', top.document).tabs('exists', subtitle)) {            jq('#tabs', top.document).tabs('add', {                title: subtitle,                content: createFrame(url),                closable: true,                width: $('#mainPanle').width() - 10,                height: $('#mainPanle').height() - 26            });        } else {            jq('#tabs', top.document).tabs('select', subtitle);        }    }</script>