用Jquery重写windows.alert方法实现思路

$.extend({
includePath: '',
include: function(file)
{
var files = typeof file == "string" ? [file] : file;
for (var i = 0; i < files.length; i++)
{
var name = files[i].replace(/^s|s$/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" />    <input type="reset" value="取消" style="display:none" class="btn8" /><br /><br /></p>";
divalert += " <p> </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();
}
});