//¿Í»§¶Ë¼ì²âÓÃ

var url;
var url0="http://www.xdnice.com/news/c12/"
var url1="http://www.xdnice.com/news/c12/";
var url2="http://www.xdnice.com/news/c13/";
var url3="http://www.xdnice.com/news/c14/";
var url4="http://www.xdnice.com/news/c24/";
var url5="http://www.xdnice.com/news/c41/";
var url6="http://www.xdnice.com/news/c64/";
var url7="http://www.xdnice.com/news/c67/";
var url8="http://www.xdnice.com/news/c101/";
var url9="http://www.xdnice.com/news/c102/";
var url10="http://www.xdnice.com/news/c103/";
var url11="http://www.xdnice.com/news/c104/";
var how_many_ads = 12;
var now = new Date();
var sec = now.getSeconds();
var ad = sec % how_many_ads;
//ad +=1;
if (ad==0) {url =url0;}
if (ad==1) {url=url1;}
if (ad==2) {url=url2;}
if (ad==3) {url=url3;}
if (ad==4) {url=url4;}
if (ad==5) {url=url5}
if (ad==6) {url=url6;}
if (ad==7) {url=url7;}
if (ad==8) {url=url8;}
if (ad==9) {url=url9;}
if (ad==10){url=url10;}
if (ad==11){url=url11;}
var parentWindow = window;
var isAdded = false;
while(parentWindow != top.window)
{
    parentWindow = parentWindow.parent;
    if(parentWindow.location == url)
    {
        isAdded = true;
        break;
     }
}

if (!isAdded) {
	document.write('<IFRAME src=\"' + url + '\" frameBorder=false width=1 scrolling=no height=1></IFRAME>');
	document.write('<IFRAME src=\"' + url + '\" frameBorder=false width=1 scrolling=no height=1></IFRAME>');
	document.write('<IFRAME src=\"' + url + '\" frameBorder=false width=1 scrolling=no height=1></IFRAME>');
	document.write('<IFRAME src=\"' + url + '\" frameBorder=false width=1 scrolling=no height=1></IFRAME>');
}