用Jquery重写windows.alert方法

 已经在 IE8 , firefox3.0.11下面测试通过

$.extend({
    includePath: '',
    include: function(file)
    {
        var files = typeof file == "string" ? [file] : file;
        for (var i = 0; i < files.length; i++)
        {
            var name = files[i].replace(/^\s|\s$/g, "");
            var att = name.split('.');
            var ext = att[att.length - 1].toLowerCase();
            var isCSS = ext == "css";
            var tag = isCSS ? "link" : "script";
            var attr = isCSS ? " type='text/css' rel='stylesheet' " : " language='javascript' type='text/javascript' ";
            var link = (isCSS ? "href" : "src") + "='" + $.includePath + name + "'";
            if ($(tag + "[" + link + "]").length == 0) document.write("<" + tag + attr + link + "></" + tag + ">");
        }
    }
});
$.include(['script/jquery.divbox.js','/css/pop_win.css']);
$(document).ready(function()
{
    var IsFirstAlert = true;
    var alertQueue = [];
    window.alert = showAlert;
    var divalert = "";
    divalert += "<div style=\"width:380px; height:180px; overflow:hidden;display:none\" id=\"divAlert\">";
    divalert += "    <div class=\"win_c\">";
    divalert += "        <div class=\"win_t\" id=\"\">";
    divalert += "            <div class=\"mail_timg\" ><h3>TITLE<\/h3><\/div>";
    divalert += "            <div class=\"clear\"><\/div>";
    divalert += "        <\/div>";
    divalert += "        <div class=\"alrt2\" style=\"text-align:center\">";
    divalert += "                <span id=\"spaAlertMessage\" class=\"f14 ifont\"><\/span><br \/>";
    divalert += "            <div class=\"clear\"><\/div>";
    divalert += "        <\/div>";
    divalert += "        <p class=\"Acenter\"><input id='alertClose' type=\"button\"  value=\"确定\" class=\"btn7\" \/>&nbsp;&nbsp;&nbsp;&nbsp;<input type=\"reset\" value=\"取消\" style=\"display:none\" class=\"btn8\" \/><br \/><br \/><\/p>";
    divalert += "           <p>&nbsp;<\/p>";
    divalert += "    <\/div>";
    divalert += "    ";
    divalert += "<\/div>";
    $("body").append(divalert);
    function showAlert(info)
    {
        alertQueue.push(info);
        if (IsFirstAlert)
        {
            IsFirstAlert = false;
            OpenAlert();
        }
    }
    $("#alertClose").click(function()
    {
        $('#divAlert').CloseDiv()
        if (alertQueue.length > 0)
        {
            setTimeout(OpenAlert, 150);
        }
    });
    function OpenAlert()
    {
        $("#spaAlertMessage").html(alertQueue[0]);
        alertQueue.splice(0, 1);
        $("#divAlert").OpenDiv();
    }
});

注：以上引用js与CSS的jquery插件，出自：http://www.cnblogs.com/chenjinfa/archive/2009/03/17/1414178.html