Need Help With This Lightbox

Hi. I am trying to make a lightbox for blogspot. So far everything went good. I just want to know if I can add some sort of cookie poart to the code below so that everytime someone visits my site it doesnt pop up every time.

Thanks.

Here is the HTML portion.

<!-- Welcome page Start by http://bloggersentral.blogspot.com/ -->
<!-- HTML part -->
<div style="padding-top:15px;">
<a id="EPEntryButton" onclick="document.getElementById(&quot;HTML88&quot;).style.display=&quot;none&quot;;document.getElementById(&quot;Text88&quot;).style.display=&quot;none&quot;">ENTER</a>
</div>
<div id="EPGrab"><a href="http://www.bloggersentral.com/2010/01/adding-entry-or-welcome-page.html" target="_blank">Make your own</a></div>
<div id="EPDarkLayer"></div>
<!-- CSS part -->
<style>
#welcome-wrapper{width:40%;margin:0 auto;height:0px;text-align:center;}
/* welcome message widget */
#Text88, #EPEntryButton, #EPGrab {position:relative;z-index:510;top:100px;}
#Text88 {background-color:#fff;border:solid 10px orange;color:#222;display:none;padding:15px;}
#HTML88 {z-index:499;display:none;}
/* DarkLayer div */
#EPDarkLayer {background-color:#000;opacity:0.6;filter:alpha(opacity=60);top:0px;left:0px;z-index:500;position:fixed;}
/* Entry button */
#EPEntryButton {background-color:lawngreen;border:outset 3px #000;color:#333;cursor:pointer;font-size:25px;padding:5px;text-decoration:none;}
#EPGrab {color:white;padding-top:10px;}
</style>
<!--[if IE 6]>
<style>
#EPDarkLayer {position:absolute;}
</style>
<![endif]-->
<!-- Javascript part -->
<script type="text/javascript">
YourBlogUrl="http://www.howtosk8board.blogspot.com"; //enter your blog url here
fromInternal=document.referrer.search(YourBlogUrl); //check come from where
getDarkLayer=document.getElementById("EPDarkLayer").style;
getText88=document.getElementById("Text88").style;
getHTML88=document.getElementById("HTML88").style;
if (fromInternal == -1)
{ //if visitor comes from external page
getDarkLayer.width=screen.availWidth+"px"; //set DarkLayer width
getDarkLayer.height=screen.availHeight*2+"px"; //set DarkLayer height
getHTML88.display="block"; //show DarkLayer
getText88.display="block"; //show message
}
else
{ //if visitor comes from internal page
getHTML88.display="none"; //hide HTML gadget
getText88.display="none"; //hide message
}
</script>
<!-- Welcome page End -->

Code (markup):

 

bump........

 

Wow that is annoying and effectively will ensure you do not have a following, i suggest that you remove that popup and use a different one that has more options to control the amount of times per ip / per person it pops up for.

I wish i had some code for you, ive struggled with this myself in the past and no longer use things like that as they really annoy ME firstly and any "Real" visitor.

 

oh thx anyways