/* 
轮播背投类 RotatorPB v3.1 
Update by Tommy <jxtommy@sina.com> 
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(); 
	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][2].replace('<startdate>','').replace('</startdate>','')); 
		var end = RotatorPB.strToDate(rad[i][3].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][0], rad[i][1], 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 = "http://www.i0573.com/ad/PopBT.html?"+bturl+"${}"+bttype+"${}"+btsrc; 
}else{ 
	sinabturl = btsrc; 
} 
try{ 
	aryADSeq.push("openWindowBack()"); 
	
}catch(e){ 
	tmpPop=openWindowBack();
	if(tmpPop!='undefined'){
		document.getElementById("btfrm").action=sinabturl;
		document.getElementById("btfrm").submit();
	}else{
		
	}
} 
	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");

} 
};