Cookie Option

[bkendra5]

I am volunteering at a hospital and working on the intranet. They want an option to have a pop up message but they only want it to pop up once or twice, and then be able to change the content and have it re pop-up.
Example: week1 how to properly wash your hands
Week2: system wide meeting on thursday dont forget. etc etc..
I am not very good in Java. but this is what i have so far. Can anyone point me in the right direction. Greatly appreciated.
also we use active directory, so i dont know if we could maybe pull by user name? Thanks

var username = GetCookie('username');
 
if (username == null) {
  username = prompt('Please enter your name (otherwise press cancel)',"WebSurfer");
  if (username == null) {
    alert('Its ok if you dont want to tell me your name');
    username = 'WebSurfer';
  } else {
    pathname = location.pathname;
    myDomain = pathname.substring(0,pathname.lastIndexOf('/')) +'/';
    var largeExpDate = new Date ();
    largeExpDate.setTime(largeExpDate.getTime() + (365 * 24 * 3600 * 1000));
    SetCookie('username',username,largeExpDate,myDomain);
  }
}
 
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" : "");
}

[acoder]

Cookies would only work for one particular computer/browser. If you need this over a number of computers/users, use server-side code.