Test

Test4Test

HTML

<div>
    <span>Hell world</span>
</div>

JavaScript

var popups={
    naver:{},
    daum:{}
}
var focus='naver';
function brain_timeInterval(){
    
    setInterval(function(){
        if(focus == 'naver'){
            popups.daum.focus();
            focus='daum';
        }else{
            popups.naver.focus();
            focus='naver';
        }
        console.log(focus);
    },3000);
}
function callNaver(){
    popups.naver = window.open('http://www.naver.com', 'id1',  'width=600, height=300, scrollbars, resizable');
}
function callDaum(){
    popups.daum = window.open('http://www.daum.net', 'id2',  'width=600, height=300, scrollbars, resizable');
}
//init();
area();
function area(){
   try{
        callNaver();
       callDaum();
       brain_timeInterval();
       
    }catch(e){
        alert(e);
    }
}