程序猿式无聊

function withjQuery(callback, safe) {
    if (typeof (jQuery) == "undefined") {
        var script = document.createElement("script");
        script.type = "text/javascript";
        script.src = "https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js";

        if (safe) {
            var cb = document.createElement("script");
            cb.type = "text/javascript";
            cb.textContent = "jQuery.noConflict();(" + callback.toString() + ")(jQuery);";
            script.addEventListener('load', function() {
                document.head.appendChild(cb);
            });
        } else {
            var dollar = undefined;
            if (typeof ($) != "undefined")
                dollar = $;
            script.addEventListener('load', function() {
                jQuery.noConflict();
                $ = dollar;
                callback(jQuery);
            });
        }
        document.head.appendChild(script);
    } else {
        callback(jQuery);
    }
}

withjQuery(function($) {
    var Notify = {
        icon: "http://im.qq.com/favicon.ico",
        title: "消息提醒",
        target: null,
        
        isSupport: function() {
            return !!window.webkitNotifications;
        },
        getPermission: function(callback) {
            window.webkitNotifications.requestPermission(function() {
                if (callback) {
                    callback(this.checkPermission());
                }
            });
        },
        checkPermission: function() {
            return !!(window.webkitNotifications.checkPermission() == 0);
        },
        show: function(msg) {
            Notify.target = window.webkitNotifications.createNotification(this.icon, this.title, msg);
            Notify.target.show();
            setTimeout(this.close, 5000);
        },
        close: function() {
            if(!Notify.target) return;
            
            Notify.target.cancel();
            Notify.target = null;
        }
    };
    
    function notice(msg) {
        if(Notify.checkPermission()) {
            Notify.show(msg);
        }else{
            alert(msg);
        }
        if(jQuery("#audio:checked").size() > 0 ) new Audio("http://static.fishlee.net/resources/audio/music2.ogg").play();
    }

    var interval = 10;
    function init() {
        $("div.toolbar").append("&nbsp;&nbsp;<input type='checkbox' id='audio' checked='checked'>audio&nbsp;&nbsp;(最后刷新：<font color='red' id='refreshlabel'>"+new Date()+"</font>&nbsp;&nbsp;下次刷新：<font color='red' id='countdown'>-</font>)");
        jQuery("a.del-record").remove();
        jQuery("ul.msg>li:last>h2").append("(" + jQuery("h2.date:last").text() + ")");

        setInterval(function(){countdown(interval);refreshMsg();}, interval * 1000);
        countdown(interval);
    }

    function countdown(n) {
        jQuery("#countdown").html(n);
        if(n > 0) setTimeout(function(){countdown(n-1);}, 1000);
    }

    var lastest = '';
    function refreshMsg() {

        jQuery("#chatMsgList").html("");
        jQuery("script[src='http://5.url.cn/verify/webkit/js/16/novip.min.js']").remove();
        jQuery(document.body).append("<script type=\"text/javascript\" src=\"http://5.url.cn/verify/webkit/js/16/novip.min.js\"></script>");

        setTimeout(function(){
            jQuery("#refreshlabel").html("" + new Date());

            var t = jQuery("ul.msg>li:last>h2").text();
            jQuery("a.del-record").remove();
            jQuery("ul.msg>li:last>h2").append("(" + jQuery("h2.date:last").text() + ")");
            if(lastest == "") lastest = t;
            if(t != "" && t != lastest) {
                notice(jQuery("ul.msg>li:last>p").text());
                lastest = t;
            }
        }, 1000);
    }
    
    window.onbeforeunload = function() {
        return '提示：\n关闭该页将会停止消息提醒！'; 
    };
    
    
    jQuery(document).ready(function(){

        if(!Notify.checkPermission()) {
            jQuery(document.body).prepend('<input type="button" value="getPremission" id="getPremissionBtn" style="100px;height:30px;">');
        }
        
        jQuery('#getPremissionBtn').live('click', function(){
            Notify.getPermission();
            if(Notify.checkPermission()) {
                jQuery(this).remove();
            }
        });
        
        init();
        
    });
    
}, true);