Oncepersession floating div

[mihai1]

Hello all from Romania, I tried few hours yesterday to edit the javascript settings because I want to be displayed once per session.

If you can help me, or edit because I know it's very simple but for me... isn't the same thing.

This is the code I want to be displayed once per session, and IF you can to close after x seconds, but important is once per session.

<style>
#topbar {
height:30px;
width:auto;
background: #005094 url('http://lh3.ggpht.com/_beEpWOXwLJE/TIb57Lu4fwI/AAAAAAAABE0/q7niFVRbyNE/top-toolbar.jpg');
background-repeat:repeat-x;
text-align:left;
padding-top:4px;
}
#adsground {
height:auto;
margin:0 auto;
width: 310px;
background:#fff;
border-bottom:2px #005094 solid;
border-right:2px #005094 solid;
border-left:2px #005094 solid;
text-align:Center;
padding:4px;
}


#headlineatas {
margin-left:85px;
opacity:1.0;
height:auto;
width:auto;
position:fixed;
top:65px;
left:170px;
border-bottom:1px #005094 solid;
border-bottom:0px blue solid;
color:#333;
padding:0px;
z-index:1001;
font-size:13px;}
</style>


<script type="text/javascript">
function getValue()
{
document.getElementById("headlineatas").style.display = 'none';
}
</script>


<div id="headlineatas">
<div id="topbar">

<span style="color:#fff;font-size:13px;font-wegight:bold;text-shadow:black 0.1em 0.1em 0.1em">Asculti AlyceRadio.</span>
<span style="color:#fff;font-size:13px;font-weight:bold;text-shadow:black 0.1em 0.1em 0.1em;float:right;padding-top:3px;padding-right:10px"><a href="http://www.google.ro/" target="_blank" onclick="getValue()">X</a></span>
</div>
<div id="adsground">
<p align="left"><h3></h3></p>

another text here

<p>

</p></div></div>

Thanks !