This is source code for the table version...

<!-- Do you need a date too?  To get a born-on date for
 your website, simply go to http://www.jwp.bc.ca/saulm/html/bornon.htm
-->
<table border=2 cellspacing=0 cellpadding=3>
<tr><td bgcolor="#000044">
<font color="#4400ff" face=georgia,arial size=+1>
<center>
<script language="JavaScript">
<!--
document.write(document.title);
//-->
</script>
</td></tr>
<tr><td bgcolor="#440000">
<font size=-1 color="#ff0000" face="trebuchet MS","arial">
<font color="#ff8800">Born on:</font> February 8, 1999
<br>
<script language="JavaScript">

<!--

// please keep these lines on when you copy the source

// made by: Nicolas - http://www.geocities.com/ResearchTriangle/1500


function getCookieVal (offset) {

  var endstr = document.cookie.indexOf (";", offset);

  if (endstr == -1)

    endstr = document.cookie.length;

  return unescape(document.cookie.substring(offset, endstr));

}


function GetCookie (name) {

  var arg = name + "=";

  var alen = arg.length;

  var clen = document.cookie.length;

  var i = 0;

  while (i < clen) {

    var j = i + alen;

    if (document.cookie.substring(i, j) == arg)

      return getCookieVal (j);

    i = document.cookie.indexOf(" ", i) + 1;

    if (i == 0) break; 

  }

  return null;

}



function SetCookie (name, value) {

  var argv = SetCookie.arguments;

  var argc = SetCookie.arguments.length;

  var expires = (argc > 2) ? argv[2] : null;

  var path = (argc > 3) ? argv[3] : null;

  var domain = (argc > 4) ? argv[4] : null;

  var secure = (argc > 5) ? argv[5] : false;

  document.cookie = name + "=" + escape (value) +

    ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +

    ((path == null) ? "" : ("; path=" + path)) +

    ((domain == null) ? "" : ("; domain=" + domain)) +

    ((secure == true) ? "; secure" : "");

}



function DeleteCookie(name) {

  var exp = new Date();

  FixCookieDate (exp);

  exp.setTime (exp.getTime() - 1);

  var cval = GetCookie (name);

  if (cval != null)

    document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();

}




var cookie_date=new Date(document.lastModified);

var expdate = new Date();

expdate.setTime(expdate.getTime()+(5*24*60*60*1000));




document.write("<Font color=ff8800>" + "Last updated: "+ "</font>" +document.lastModified);


document.write("");

if (!(cookie_date == GetCookie("cookie_date"))){

  SetCookie("cookie_date",cookie_date,expdate);

  document.write("<font color='yellow'><br>Site has changed since last visit!</font><br>");

}

//-->



</script>
</font>
</td></tr>
</table>



If you know about HTML and stuff, you can custumize the code after getting it into your website. Feel free to change the table, the colors, and anything else you want. Just stay away from changing the script unless you know what you're doing.
Note that you should not put this code in another table (IE. within the <table> tag) because then it will give you errors. This script is kind of fickle so if you use it make sure you center it (not right or left-allign it).
This script works with both Netscape 2 and 3.

Now come see the example.