// menu button functions
if (document.images) {
  homeon = new Image();
  homeon.src = "images/home2.gif";
  homeoff = new Image();
  homeoff.src = "images/home.gif";

  profileon = new Image();
  profileon.src = "images/profile2.gif";
  profileoff = new Image();
  profileoff.src = "images/profile.gif";

  crewchiefon = new Image();
  crewchiefon.src = "images/crewchief2.gif";
  crewchiefoff = new Image();
  crewchiefoff.src = "images/crewchief.gif";

  scheduleon = new Image();
  scheduleon.src = "images/schedule2.gif";
  scheduleoff = new Image();
  scheduleoff.src = "images/schedule.gif";

  newson = new Image();
  newson.src = "images/news2.gif";
  newsoff = new Image();
  newsoff.src = "images/news.gif";

  sponsorson = new Image();
  sponsorson.src = "images/sponsors2.gif";
  sponsorsoff = new Image();
  sponsorsoff.src = "images/sponsors.gif";

  contactson = new Image();
  contactson.src = "images/contacts2.gif";
  contactsoff = new Image();
  contactsoff.src = "images/contacts.gif";

  guestbookon = new Image();
  guestbookon.src = "images/guestbook2.gif";
  guestbookoff = new Image();
  guestbookoff.src = "images/guestbook.gif";
}

function mouseOver(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "on.src");
  }
}

function mouseOut(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "off.src");
  }
}