вроде бы так)):
Code
<div id="byWebo4kaRu" style="display:none">тут ваша инфа))</div>
<script type="text/javascript">
function setCookie(name, value, days) {
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
var expires = "; expires=" + date.toGMTString();
}
else var expires = "";
document.cookie = name + "=" + value + expires + "; path=/";
}
function getCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for (var i = 0; i < ca.length; i++) {
var c = ca[i];
while (c.charAt(0) == ' ') c = c.substring(1, c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
}
return null;
}
nameUwndWebo4kaRu = "webo4ka.ru"; //имя uWnd окна
if(getCookie('onuWndWebo4kaRu'))
{
window.onload=function(){new _uWnd('uWndWebo4kaRu',''+nameUwndWebo4kaRu+'',400,300,{alert:1, autosize:1, resize:1, shadow:1, fadetype: 1, fadespeed: 400, fadeclosetype: 1, fadeclosespeed: 400, onclose: function(){setCookie('offuWndWebo4kaRu', 1, 365); eraseCookie('onuWndWebo4kaRu');}},$("#byWebo4kaRu").html());}
}
if(getCookie('offuWndWebo4kaRu'))
{
function eraseCookie(offuWndWebo4kaRu){setCookie(offuWndWebo4kaRu, "", -1); }
}
else
{
window.onload=function(){new _uWnd('uWndWebo4kaRu',''+nameUwndWebo4kaRu+'',400,300,{alert:1, autosize:1, resize:1, shadow:1, fadetype: 1, fadespeed: 400, fadeclosetype: 1, fadeclosespeed: 400, onclose: function(){setCookie('offuWndWebo4kaRu', 1, 365); eraseCookie('onuWndWebo4kaRu');}},$("#byWebo4kaRu").html());}
}
</script>