======================= 새창을 띄울 html =======================
<script Language="Javascript">
function getCookie(name) {
var Found = false
var start, end
var i = 0

while(i <= document.cookie.length) {
start = i
end = start + name.length

if(document.cookie.substring(start, end) == name) {
Found = true
break
}
i++
}
if(Found == true) {
start = end + 1
end = document.cookie.indexOf(";", start)
if(end < start)
end = document.cookie.length
return document.cookie.substring(start, end)
}
return ""
}

function openPopup()
{
var noticeCookie=getCookie("CookieName");
if (noticeCookie != "no")
window.open('popup.html','window','width=540,height=400,top=50,left=150,scrollbars=yes');//위에 부분은 팝업 주소..두번재는 건들지 마시구 세번째 부터 가로와세로폭정해주세여..
}
openPopup();
</script>




============= popup.html ==================

<script language="JavaScript">
function setCookie( name, value, expiredays )
{
var todayDate = new Date();
todayDate.setDate( todayDate.getDate() + expiredays );
document.cookie = name + "=" + escape( value ) + "; path=/; expires=" + todayDate.toGMTString() + ";"
}
function closeWin() {
{
if ( document.cnjform.notice.checked )
setCookie("CookieName", "no" , 1);
}
top.close();
}
</script>

                           내용 적는 곳

<form name="cnjform">
  <p align="right"><span style="font-size:10pt;"><font color=0156C2><b><input type="checkbox" name="notice" onclick="closeWin()">오늘 하루 이 창을 띄우지 않습니다. &nbsp;</b>
  </font></span>

</form>