仿中关村在线首页弹出式广告插件(jQuery版)

/*
疯狂秀才 制作 于 2012-04-24 17:00
QQ: 1055818239
email: hxl_apple@163.com
*/
(function($){
$.fn.quickAd = function(settings){
settings = $.extend({
width:760,
height:400,
html:'我是广告内容',
top:130,
sec:5, //广告显示时长，单位秒
border:true //显示外框
},settings);
var fkxc_ad = 0;
var bodyWidth = $(window).width();
var _adBodyContainerID = "bigAd_"+settings.width;
var _adCloseContainerID = "bitAdClose_"+settings.width;
var closeHtml = '广告剩余 <span id="__sec"></span> 秒 <a href="javascript:;" id="__close_ad">关 闭</a>';
//广告内容容器
var _adContent = '<div id="'+_adBodyContainerID+'"></div>';
//关闭按钮容器
var _adCloseBtn = '<div id="'+_adCloseContainerID+'">'+closeHtml+'</div>';
var self = $(this);
$(this).empty().html(_adContent+_adCloseBtn);
$('#__close_ad').click(function(){
window.clearTimeout(fkxc_ad);
self.fadeOut();
})
if(settings.border){
$('#'+_adBodyContainerID).css('border','1px solid #ccc');
}
$('#'+_adBodyContainerID).empty().html(settings.html).css({
'width':settings.width+'px',
'height':settings.height+'px',
'position': 'fixed',
'z-index': 20000,
'top':settings.top+'px',
'left':(bodyWidth - settings.width) / 2 + 'px'
}).fadeIn('fast');
$('#'+_adCloseContainerID).css({
'width':'160px','height':'18px','line-height':'18px','background-color':'#ccc',
'text-align': 'center', 'opacity': '0.8','top':settings.top+'px','position': 'fixed',
'left':((bodyWidth - settings.width) / 2+(settings.width-160)) + 'px', 'z-index': 20001
}).show();
var daojishi = function (s) {
fkxc_ad = setInterval(function () {
if (s == 0) {
self.fadeOut();
}
$("#__sec").text(s);
s--;
}, 1000);
}
daojishi(settings.sec)
}
})(jQuery)

<div id="testad"></div>
<script>
$(function(){
$('#testad').quickAd({
html:'<img src="11_523049_88a5614dc705882 (1).jpg" width=760 height=400 />'
});
})
</script>