给jui(dwz)的navTab换一套漂亮的图标

$("a[target=navTab]", $p).each(function () {
        $(this).click(function (event) {
            var $this = $(this);
            var title = $this.attr("title") || $this.text();
            var tabid = $this.attr("rel") || "_blank";
            var fresh = eval($this.attr("fresh") || "true");
            var external = eval($this.attr("external") || "false");
            var icos = $this.attr("icos") || "fa fa-cog fa-lg fa-fw";//注意这里，添加这一句，意思是，获取html属性icos，如果没有，就指定一个。
            var url = unescape($this.attr("href")).replaceTmById($(event.target).parents(".unitBox:first"));
            DWZ.debug(url);
            if (!url.isFinishedTm()) {
                alertMsg.error($this.attr("warn") || DWZ.msg("alertSelectMsg"));
                return false
            }
            navTab.openTab(icos,tabid, url, {    //同时注意这里，给openTab加了一个icos的参数，也就是传过去一个图标字符串的参数
                title: title,
                fresh: fresh,
                external: external
            });
            event.preventDefault()
        })
    });

openTab: function (icos,tabid, url, options) {
        var op = $.extend({
            title: "New Tab",
            type: "GET",
            data: {},
            fresh: true,
            external: false
        }, options);
        var iOpenIndex = this._indexTabId(tabid);
        if (iOpenIndex >= 0) {
            var $tab = this._getTabs().eq(iOpenIndex);
            var span$ = $tab.attr("tabid") == this._op.mainTabId ? "> span > span" : "> span";
            //20160906添加tab图标，传入icos为图标字符串
            var tabfrag = ‘<i class="#icos#"></i>‘;
            var tabfrag1 = tabfrag.replaceAll("#icos#", icos);
            //这一句实现了在navTab前面加上图标
            $tab.find(">a").attr("title", op.title).find(span$).html(tabfrag1 + op.title);

            
            var $panel = this._getPanels().eq(iOpenIndex);
            if (url && (op.fresh || $tab.attr("url") != url)) {
                $tab.attr("url", url);
                if (op.external || url.isExternalUrl()) {
                    $tab.addClass("external");
                    navTab.openExternal(url, $panel)
                } else {
                    $tab.removeClass("external");
                    $panel.ajaxUrl({
                        type: op.type,
                        url: url,
                        data: op.data,
                        callback: function () {
                            navTab._loadUrlCallback($panel)
                        }
                    })
                }
            }
            this._currentIndex = iOpenIndex
        } else {
            //同样，这里是新打开的tab,作同样的处理
            var tabFrag = ‘<li tabid="#tabid#"><a href="javascript:" title="#title#" class="#tabid#"><span><i class="#icos#"></i> #title#</span></a><a href="javascript:;" class="close">close</a></li>‘;
            this._tabBox.append(tabFrag.replaceAll("#tabid#", tabid).replaceAll("#title#", op.title).replaceAll("#icos#",icos));
            this._panelBox.append(‘<div class="page unitBox"></div>‘);
            this._moreBox.append(‘<li><a href="javascript:" title="#title#">#title#</a></li>‘.replaceAll("#title#", op.title));
            var $tabs = this._getTabs();
            var $tab = $tabs.filter(":last");
            var $panel = this._getPanels().filter(":last");
            if (url) {
                if (op.external || url.isExternalUrl()) {
                    $tab.addClass("external");
                    navTab.openExternal(url, $panel)
                } else {
                    $tab.removeClass("external");
                    $panel.ajaxUrl({
                        type: op.type,
                        url: url,
                        data: op.data,
                        callback: function () {
                            navTab._loadUrlCallback($panel)
                        }
                    })
                }
            }
            if ($.History) {
                setTimeout(function () {
                    $.History.addHistory(tabid, function (tabid) {
                        var i = navTab._indexTabId(tabid);
                        if (i >= 0) {
                            navTab._switchTab(i)
                        }
                    }, tabid)
                }, 10)
            }
            this._currentIndex = $tabs.size() - 1;
            this._contextmenu($tabs.filter(":last").hoverClass("hover"))
        }
        this._init();
        this._scrollCurrent();
        this._getTabs().eq(this._currentIndex).attr("url", url)
    }

<li><a href="@Url.Content("~/CarManage/Index")" target="navTab" rel="carindex" icos="fa fa-bus fa-fw"><i class="fa fa-bus fa-lg fa-fw"></i>  车辆管理</a></li>