[Deff]

<div id=right><span id="close-right"></span>
Тут контент
</div>
<script type="text/javascript">
function setcookie(a,b,c) {if(c){var d = new Date();d.setTime(d.getTime()+c);}if(a && b) document.cookie = a+'='+b+(c ? '; expires='+d.toUTCString() : '');else return false;}
 function getcookie(a) {var b = new RegExp(a+'=([^;]){1,}');var c = b.exec(document.cookie);if(c) c = c[0].split('=');else return false;return c[1] ? c[1] : false;}

if(getcookie('close-right'))jQuery('#right').hide();

jQuery('#close-right').click(function(){
  setcookie('close-right',true,4*60*60*1000) //Кук на 4 часа
  jQuery('#right').fadeOut(1300);
});
</script>
<style type="text/css">
#right {
    border:3px solid #00ACFF;
    width: 160px;
    height:140px;
    right:10px;
    border-radius:10px;
    position:fixed;
    top:30%;
    z-index:2000;
    background: #202226;
}
#close-right {
    display:inline-block;
    float:right;
    margin:4px;
    cursor:pointer;
    position:relative;
    width:19px;
    height:19px;
    background: url(http://s1.uploads.ru/i/dAjpq.png);
   
}
</style>