简单型jquery对联广告代码插件

//调用方法
//$("body").couplet({width:100,height:300,leftCouplet:"http://www.jb200.com/ad/left.swf",rightCouplet:"http://www.jb200.com/ad/right.swf"});});
//调用参数
//width:100,--宽 默认宽度100
//height:300,--总高 默认高度 300
//top:100,广告距顶部的高度
//leftCouplet:"http://www.jb200.com/ad/left.swf",左则flash地址或图片地址
//leftLink:"http://www.jb200.com/",左则连接地址，广告是图片时需要
//rightCouplet:"http://www.jb200.com/ad/right.swf",右则flash地址或图片地址
//rightLink:"http://www.jb200.com/"右则连接地址，广告是图片时需要
jQuery.fn.couplet = function(settings) { 
 
settings = jQuery.extend({
    width: 100,
    height:300,
    top:100,
    leftCouplet:"",
    leftLink:"http://www.jb200.com/",
    rightCouplet:"",
    rightLink:"http://www.jb200.com/"
},
settings);
var s = this;
//添加广告窗口
s.append("<div class="couplet" id="leftCouplet" style="width:"+settings.width+";left:10px;top:0px; position:absolute;background:#e5e5e5;"></div>");
s.append("<div class="couplet" id="rightCouplet" style="width:"+settings.width+";right:10px;top:0px; position:absolute;background:#e5e5e5;"></div>");
var leftCouplet = s.children("#leftCouplet");
var rightCouplet = s.children("#rightCouplet");
//加载左则广告
if(settings.leftCouplet.substring(settings.leftCouplet.lastIndexOf('.')).toLowerCase() == ".swf"){
    leftCouplet.append("<div><embed src=""+settings.leftCouplet+"" width=""+settings.width+"" height=""+settings.height+"" </embed></div>");
}else{
    leftCouplet.append("<a href='"+settings.leftLink+"' target='_blank'><img src=""+settings.leftCouplet+"" width=""+settings.width+""  height=""+settings.height+""/></a>");
}
//加载右则广告
if(settings.rightCouplet.substring(settings.rightCouplet.lastIndexOf('.')).toLowerCase() == ".swf"){
    rightCouplet.append("<embed src=""+settings.rightCouplet+"" width=""+settings.width+"" height=""+settings.height+"" frameborder="0"></embed>");
}else{
    rightCouplet.append("<a href='"+settings.rightLink+"' target='_blank'><img src=""+settings.rightCouplet+"" width=""+settings.width+""  height=""+settings.height+""/></a>");
}
var closeBtn = "<div class="coupletClose" style="text-align:center;padding:2px 0px;font-size:12px;cursor:pointer ">关闭</label>";
leftCouplet.append(closeBtn);
rightCouplet.append(closeBtn);
$(".coupletClose").click(function(){
   leftCouplet.remove();
   rightCouplet.remove();
});
//显示对联
show();

function show(){
    var winTop = $(window).scrollTop();
    $(".couplet").animate({
  top: winTop + settings.top
}, 300);
};
//滚动条事件
$(window).scroll(function() {
    $(".couplet").stop();
    show();
});
};