/*
轮播背投类 RotatorPB v3.1
格式：new RotatorPB(广告数组)
说明：第一次访问随机出现，以后访问顺序轮播；自动过滤过期广告；cookie时间24小时；商业广告数量不足时不显示
*/
if(typeof(RotatorPB)!='function'){
        var RotatorPB=function (rad){
                this.ary = new Array();
                //this.date = new Date();
                if(typeof(TodayDate)!='object'){
                        this.date = new Date();
                }else{
                        this.date = TodayDate;
                }
                this.w = rad.width;
                this.h = rad.height;
                this.num = rad.num;
                this.o = rad.length;
                this.id = RotatorPB.id++;
                this.m = 'rpb_'+this.id;
                this.n = new Array();
                this.L = new Date();
                this.e = 0;
                var f;
                var D = false;
                var nn = 0;
                //过滤无效广告
                for(var i=0; i<rad.length; i++){
                        var start = RotatorPB.strToDate(rad[i][0].replace('<startdate>','').replace('</startdate>',''));
                        var end = RotatorPB.strToDate(rad[i][1].replace('<enddate>','').replace('</enddate>',''),true);
                        if(this.date>start && this.date<end && (this.num==null || this.ary.length<this.num) ){
                                this.ary.push([rad[i][2], rad[i][3], rad[i][4]]);
                        }
                }
                this.o = this.ary.length;
                //取id
                for(var i=0;i<this.o;i++){
                        f=this.m+'_'+(i+1);
                        g=RotatorPB.G(f);
                        if(g!=''){
                                this.n[i]=g;
                                //D=true;
                        }else {
                                this.n[i]=0;
                        }
                }
                if(!D){
                        var r=Math.ceil(Math.random()*this.o);
                        var t=this.m+'_'+r;
                        RotatorPB.S(t,this.L.getTime(),1440);
                        this.e=r;
                        if(this.o==1){RotatorPB.S('s_dl',r,1440);}
                        //return r;
                }else {
                        var R=this.n.join(',').split(',');
                        var k=R.sort();
                        var max=Number(k[k.length-1]);
                        var min=Number(k[0]);
                        var F;
                        for(var i=0;i<this.n.length;i++){
                                if(max==this.n[i]){
                                        F=i+1;
                                        break;
                                }
                        }
                        if(typeof(F)!='undefined'){
                                G=this.m+'_'+F;
                                H=Number(RotatorPB.G(G));
                                I=F%this.o+1;
                                J=this.m+'_'+I;
                                RotatorPB.S(J,this.L.getTime(),1440);
                                if(this.o==1){
                                        I=-RotatorPB.G('s_dl');
                                        if(I==0){I=1;RotatorPB.S('s_dl',1,1440);}
                                        RotatorPB.S('s_dl',I,1440);
                                }
                                this.e=I;
                                //return I;
                        }
                }
                //Show AD
                if(this.e==0 || this.ary.length==0) return; //如果没有广告则不显示
                if(this.e==-1) return; //当只有一个广告时：始终显示第一个/奇数次刷新显示
                var n = this.e-1;
                var btsrc = this.ary[n][0];
                var bturl = this.ary[n][1];
                var bttype = btsrc.substring(btsrc.length-3).toLowerCase();

                if(bttype=='.js'){ //js
                        document.write('<script language="javascript" type="text/javascript" src="'+btsrc+'"></scr'+'ipt>'); return;
                }else if(bttype!='htm' && bttype!='tml'){
                        sinabturl = "backpop.htm?"+bturl+"{$}"+bttype+"{$}"+btsrc;
                        //sinabturl = "backpop.php";alert("backpop.php?"+bturl+"{$}"+bttype+"{$}"+btsrc);
                }else{
                        sinabturl = btsrc;
                }

                try{
                        aryADSeq.push("openWindowBack()");
                }catch(e){
                        openWindowBack();
                }
                if(this.ary[n][2]!=""){ //监测计数
                        var oImg = new Image();
                        oImg.src = this.ary[n][2];
                }
        };
        RotatorPB.id=1;
        RotatorPB.G=function (N){
                var c=document.cookie.split("; ");
                for(var i=0;i<c.length;i++){
                        var d=c[i].split("=");
                        if(d[0]==N)return unescape(d[1]);
                }return '';
        };
        RotatorPB.S=function (N,V,Q){
                var L=new Date();
                var z=new Date(L.getTime()+Q*60000);
                document.cookie=N+"="+escape(V)+"; path=/; expires="+z.toGMTString()+";";
        };
        RotatorPB.strToDate = function(str,ext){
                var arys = new Array();
                arys = str.split('-');
                var newDate = new Date(arys[0],arys[1]-1,arys[2],9,0,0);
                if(ext){
                        newDate = new Date(newDate.getTime()+1000*60*60*24);
                }
                return newDate;
        }
        var openWindowBack = function(){
                var popUpWin2 = open(sinabturl, (window.name!="popUpWin2")?"popUpWin2":"", "width=1,height=1,top=4000,left=3000");
        }
};