解决DWZ(JUI)的panel 点击关闭或者打开按钮 自己写的标签消失

问题描述：
DWZ的panel面板比较常用，我们常常需要在其标题栏上再增加一个些按钮，如下图
问题出来了，增加按钮后，点面板收缩按钮，增加的按钮就消失了
而且面板收缩的click事件，也跟新增的按钮绑定了，
这样导致面板无法使用，还好是开源代码，研究其代码就能解决问题

/**
 * @author Roger Wu
 * @version 1.0
 */

function S4() {
    return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
}

(function ($) {
    $.extend($.fn, {
        jPanel: function (options) {
            var op = $.extend({ header: "panelHeader", headerC: "panelHeaderContent", content: "panelContent", coll: "collapsable", exp: "expandable", footer: "panelFooter", footerC: "panelFooterContent" }, options);
            return this.each(function () {
                var $panel = $(this);
                var close = $panel.hasClass("close");
                var collapse = $panel.hasClass("collapse");

                var $content = $(">div", $panel).addClass(op.content);
                var title = $(">h1", $panel).wrap('<div class="' + op.header + '"><div class="' + op.headerC + '"></div></div>');
                var buttonid = "panel_" + S4();
                if (collapse) $("<a id="" + buttonid + "" href=""></a>").addClass(close ? op.exp : op.coll).insertAfter(title);

                var header = $(">div:first", $panel);
                var footer = $('<div class="' + op.footer + '"><div class="' + op.footerC + '"></div></div>').appendTo($panel);

                var defaultH = $panel.attr("defH") ? $panel.attr("defH") : 0;
                var minH = $panel.attr("minH") ? $panel.attr("minH") : 0;
                if (close)
                    $content.css({
                        height: "0px",
                        display: "none"
                    });
                else {
                    if (defaultH > 0)
                        $content.height(defaultH + "px");
                    else if (minH > 0) {
                        $content.css("minHeight", minH + "px");
                    }
                }
                if (!collapse) return;
                var $pucker = $("#" + buttonid);
                var inH = $content.innerHeight() - 6;
                if (minH > 0 && minH >= inH) defaultH = minH;
                else defaultH = inH;
                $pucker.click(function () {
                    if ($pucker.hasClass(op.exp)) {
                        $content.jBlindDown({
                            to: defaultH, call: function () {
                                $pucker.removeClass(op.exp).addClass(op.coll);
                                if (minH > 0) $content.css("minHeight", minH + "px");
                            }
                        });
                    } else {
                        if (minH > 0) $content.css("minHeight", "");
                        if (minH >= inH) $content.css("height", minH + "px");
                        $content.jBlindUp({
                            call: function () {
                                $pucker.removeClass(op.coll).addClass(op.exp);
                            }
                        });
                    }
                    return false;
                });
            });
        }
    });
})(jQuery);