I need to add a 5 minute cookie to the code below so once ad is close it will come back in 5 minutes again, right now it shows on every page load
<div id="catfish" style="position:fixed; bottom:0; left:0; right:0; text-align:center; z-index:5000; width: 468px; margin: 0px auto;">
<div style="position:absolute; margin-bottom:0px; z-index:15;">
<a href="Javascript:void(0);"onclick="document.getElementById('catfish').style.display='none'"><img src="" alt="close" height="20"></img></a>
</div>
<div>
</div>