//popup class 显示弹出窗口，。
/*以下为使用popup对象，传入相应的配置参数，弹出不同类型的窗口
         function ShowIframe() //显示iframe
         {
             var pop=new Popup({ contentType:1,isReloadOnClose:false,width:400,height:500});
             pop.setContent("contentUrl","链接地址");
             pop.setContent("title","框架iframe示例");
             pop.build();
             pop.show();
         }
         function ShowHtmlString() //显示html
         {
             var strHtml = "

ds	dads
dadas	dasd
dadasd	dsadads

";
             var pop=new Popup({ contentType:2,isReloadOnClose:false,width:340,height:300});
             pop.setContent("contentHtml",strHtml);
             pop.setContent("title","字符串示例html");
             pop.build();
             pop.show();
         }
         function ShowAlert() //显示警示对话框
         {
             var pop=new Popup({ contentType:4,isReloadOnClose:true,width:340,height:80});
             pop.setContent("title","警告框示例alert");
             pop.setContent("alertCon","alert对话框的内容");
             pop.build();
             pop.show();
         }
         function ShowConfirm() //显示确认对话框
         {
             var pop=new Popup({ contentType:3,isReloadOnClose:false,width:340,height:80});
             pop.setContent("title","对话框示例confirm");
             pop.setContent("confirmCon","confirm对话框的内容");
             pop.setContent("callBack",ShowCallBack); //回调函数
             pop.setContent("parameter",{id:"divCall",str:"点击确定后显示的字符串",obj:pop});
             pop.build();
             pop.show();
         }
         function ShowCallBack(para) //回调函数
         {
             var o_pop = para["obj"]
             var obj = document.getElementById(para["id"]);
             o_pop.close();
             obj.innerText = para["str"];
         }
*/
if(!Array.prototype.push){
Array.prototype.push=function(){
   var startLength=this.length;
   for(var i=0;i<arguments.length;i++)
    this[startLength+i]=arguments[i];
   return this.length;
}
};
function G(){
   var elements=new Array();
   for(var i=0;i<arguments.length;i++){
    var element=arguments[i];
    if(typeof element=='string')
     element=document.getElementById(element);
    if(arguments.length==1)
     return element;elements.push(element)
   };
   return elements
};
Function.prototype.bind=function(object){
var __method=this;
return function(){__method.apply(object,arguments)}
};
Function.prototype.bindAsEventListener=function(object){
var __method=this;
return function(event){__method.call(object,event||window.event)}
};
Object.extend=function(destination,source){
for(property in source){destination[property]=source[property]};return destination
};
if(!window.Event){var Event=new Object()};
Object.extend(Event,{observers:false,element:function(event){return event.target||event.srcElement},isLeftClick:function(event){return(((event.which)&&(event.which==1))||((event.button)&&(event.button==1)))},pointerX:function(event){return event.pageX||(event.clientX+(document.documentElement.scrollLeft||document.body.scrollLeft))},pointerY:function(event){return event.pageY||(event.clientY+(document.documentElement.scrollTop||document.body.scrollTop))},stop:function(event){if(event.preventDefault){event.preventDefault();event.stopPropagation()}else{event.returnValue=false;event.cancelBubble=true}},findElement:function(event,tagName){var element=Event.element(event);while(element.parentNode&&(!element.tagName||(element.tagName.toUpperCase()!=tagName.toUpperCase())))element=element.parentNode;return element},_observeAndCache:function(element,name,observer,useCapture){if(!this.observers)this.observers=[];if(element.addEventListener){this.observers.push([element,name,observer,useCapture]);element.addEventListener(name,observer,useCapture)}else if(element.attachEvent){this.observers.push([element,name,observer,useCapture]);element.attachEvent('on'+name,observer)}},unloadCache:function(){if(!Event.observers)return;for(var i=0;i<Event.observers.length;i++){Event.stopObserving.apply(this,Event.observers[i]);Event.observers[i][0]=null};Event.observers=false},observe:function(element,name,observer,useCapture){var element=G(element);useCapture=useCapture||false;if(name=='keypress'&&(navigator.appVersion.match(/Konqueror|Safari|KHTML/)||element.attachEvent))name='keydown';this._observeAndCache(element,name,observer,useCapture)},stopObserving:function(element,name,observer,useCapture){var element=G(element);useCapture=useCapture||false;if(name=='keypress'&&(navigator.appVersion.match(/Konqueror|Safari|KHTML/)||element.detachEvent))name='keydown';if(element.removeEventListener){element.removeEventListener(name,observer,useCapture)}else if(element.detachEvent){element.detachEvent('on'+name,observer)}}});
Event.observe(window,'unload',Event.unloadCache,false);
var Class=function(){
var _class=function(){
   this.initialize.apply(this,arguments)
};
for(i=0;i<arguments.length;i++){
   superClass=arguments[i];for(member in superClass.prototype){_class.prototype[member]=superClass.prototype[member]}
};
_class.child=function(){return new Class(this)};
_class.extend=function(f){for(property in f){_class.prototype[property]=f[property]}};
return _class
};
function space(flag){
if(flag=="begin"){
   var ele=document.getElementById("ft");
   if(typeof(ele)!="undefined"&&ele!=null)
    ele.id="ft_popup";
   ele=document.getElementById("usrbar");
   if(typeof(ele)!="undefined"&&ele!=null)
    ele.id="usrbar_popup"
}
else if(flag=="end"){
   var ele=document.getElementById("ft_popup");
   if(typeof(ele)!="undefined"&&ele!=null)ele.id="ft";
   ele=document.getElementById("usrbar_popup");
   if(typeof(ele)!="undefined"&&ele!=null)ele.id="usrbar"}
};

以下是popup类，包括初始化参数及可调用的方法build()、show()...
// Popup Class begin....
var Popup=new Class();
Popup.prototype={
iframeIdName:'ifr_popup', //iframe的名字
initialize:function(config){
   this.config=Object.extend({ //属性设置
    contentType:1, //pop类型 1. 内嵌iframe，2. 显示给定的html 3. confirm框 4. alert框
    isHaveTitle:true, //是否有标题栏
    scrollType:'no', //内嵌iframe是否可以滚动
    isBackgroundCanClick:false, //背景是否可以点击
    isSupportDraging:true, //是否支持拖动
    isShowShadow:true, //是否显示阴影
    isReloadOnClose:true, //关闭后是否重新加载页面
    width:400, //宽度
    height:300 //高度
   },config||{});
   this.info={ //参数
    shadowWidth:4, //阴影宽度
    title:"", //标题
    contentUrl:"", //iframe的url
    contentHtml:"", //内容的html
    callBack:null, //回调函数
    parameter:null, //调用的参数 如 {id:"divCall",str:"点击确定后显示的字符串",obj:pop}
    confirmCon:"", //confirm的内容
    alertCon:"", //alert的内容
    someHiddenTag:"select,object,embed", //自动隐藏的页面元素
    someDisabledBtn:"", //禁用的btn
    someHiddenEle:"", //隐藏的匀速
    overlay:0, //覆盖
    coverOpacity:40 //蒙皮不透明度
   };
    this.color={
    cColor:"#EEEEEE", //蒙皮颜色
    bColor:"#FFFFFF", //背景颜色
    tColor:"#48BBFA", //标题背景颜色，边框颜色
    wColor:"#FFFFFF" //标题文字颜色
   };
    this.dropClass=null;
    this.someToHidden=[];
    this.someToDisabled=[];
    if(!this.config.isHaveTitle)
     this.config.isSupportDraging=false;
    this.iniBuild()
},
setContent:function(arrt,val){ //设置内容，即 this.info 的参数内容
   if(val!=''){
    switch(arrt){
     case 'width':this.config.width=val;break;
     case 'height':this.config.height=val;break;
     case 'title':this.info.title=val;break;
     case 'contentUrl':this.info.contentUrl=val;break;
     case 'contentHtml':this.info.contentHtml=val;break;
     case 'callBack':this.info.callBack=val;break;
     case 'parameter':this.info.parameter=val;break;
     case 'confirmCon':this.info.confirmCon=val;break;
     case 'alertCon':this.info.alertCon=val;break;
     case 'someHiddenTag':this.info.someHiddenTag=val;break;
     case 'someHiddenEle':this.info.someHiddenEle=val;break;
     case 'someDisabledBtn':this.info.someDisabledBtn=val;break;
     case 'overlay':this.info.overlay=val}
   }
},
iniBuild:function(){
   G('dialogCase')?G('dialogCase').parentNode.removeChild(G('dialogCase')):function(){};
   var oDiv=document.createElement('span');oDiv.id='dialogCase';document.body.appendChild(oDiv)
},
build:function(){
   var baseZIndex=10001+this.info.overlay*10;
   var showZIndex=baseZIndex+2;this.iframeIdName='ifr_popup'+this.info.overlay;
   //关闭按钮
   //var path="http://img.baidu.com/hi/img/";
   //var close='';
   var close='×';
   var cB='filter: alpha(opacity='+this.info.coverOpacity+');opacity:'+this.info.coverOpacity/100+';';
   var cover='

';
   var mainBox=''+'';
   if(!this.config.isBackgroundCanClick){G('dialogCase').innerHTML=cover+mainBox;G('dialogBoxBG').style.height=document.body.scrollHeight}
   else G('dialogCase').innerHTML=mainBox;Event.observe(G('dialogBoxClose'),"click",this.reset.bindAsEventListener(this),false);
   if(this.config.isSupportDraging){dropClass=new Dragdrop(this.config.width,this.config.height,this.info.shadowWidth,this.config.isSupportDraging,this.config.contentType);G("dialogBoxTitle").style.cursor="move"};this.lastBuild()},

lastBuild:function(){

   var confirm='

';
   var alert='';
   var baseZIndex=10001+this.info.overlay*10;var coverIfZIndex=baseZIndex+4;
   if(this.config.contentType==1){var openIframe="";
   var coverIframe="