效果：
/*
title: 窗口标题
content: 内容(可选内容为){ text | id | img | url | iframe }
内容宽度
height: 内容高度
drag: 是否可以拖动(ture为是,false为否)
原理：主要是对div的z-index的控制。
*/
$(document).ready(function(){
function TipsWindown(title,content,width,height,drag) {
$("#windown-box").remove();
this.title = title;
this.content = content;
this.width = width >= 950 ? this.width=950 : this.width = width;
this.height = height >= 527 ? this.height=527 : this.height= height;
this.drag = drag?drag:true;
var that = this;
var windownBg_html = new String;
windownBg_html = "<div>"+
"<div id='windownbg' style='height:"+$(window).height()+"px;filter:alpha(opacity=0);opacity:0;z-index: 999900'></div>"+
"<div id='windown-box' class='ui-widget-content'>"+
"<div id='windown-title'><h2></h2><span id='windown-close'>关闭</span></div>"+
"<div id='windown-content-border'><div id='windown-content'></div></div>"
"</div>"+
"</div>";
var $template = $(windownBg_html);
$template.find("h2").html(this.title);
$template.find("#windown-content").html($("#"+this.content).html());
$("body").append($template.html());
$("#windownbg").show();
$("#windownbg").animate({opacity:"0.5"},"normal");
$("#windown-box").show();
if( this.height >= 527 ) {
$("#windown-title").css({(parseInt(this.width)+22)+"px"});
$("#windown-content").css({(parseInt(this.width)+17)+"px",height:this.height+"px"});
}else {
$("#windown-title").css({(parseInt(this.width)+10)+"px"});
$("#windown-content").css({width+"px",height:this.height+"px"});
}
$("#windown-box").css({left:"50%",top:"50%",marginTop:-((parseInt(this.height)+53)/2)+"px",marginLeft:-((parseInt(this.width)+32)/2)+"px"});
if(this.drag){
$("#windown-box").draggable();
}
$("#windown-close").live("click",function(){
that.closeWindown();
});
}
TipsWindown.prototype.closeWindown = function(){
$("#windownbg").remove();
$("#windown-box").fadeOut("slow",function(){$(this).remove();});
}
var tipsWindownObject = null;
$("#isread").bind("click",function(){
tipsWindownObject = new TipsWindown("jquery弹出层", 'simTestContent', 600, 255);
});
$("#confirmTerm").live("click",function(){
tipsWindownObject.closeWindown();
});
});