browser = (((navigator.appName == "Netscape") && (parseInt (navigator.appVersion) >= 3 )) ||
             ((navigator.appName == "Microsoft Internet Explorer") && (parseInt (navigator.appVersion) >= 4)))

  if (browser)
    {
      normal = new MakeArray(25)
      over = new MakeArray(25)
      collage = new MakeArray(25)

      normal[1].src = "../images/menu/home.gif"
      normal[2].src = "../images/menu/aboutus.gif"
      normal[3].src = "../images/menu/pormifuturo.gif"
      normal[4].src = "../images/menu/issues.gif"
      normal[5].src = "../images/menu/events.gif"
      normal[6].src = "../images/menu/register.gif"
      normal[7].src = "../images/menu/contactus.gif"

      over[1].src = "../images/menu/home-on.gif"
      over[2].src = "../images/menu/aboutus-on.gif"
      over[3].src = "../images/menu/pormifuturo-on.gif"
      over[4].src = "../images/menu/issues-on.gif"
      over[5].src = "../images/menu/events-on.gif"
      over[6].src = "../images/menu/register-on.gif"
      over[7].src = "../images/menu/contactus-on.gif"

      collage[1].src = "../images/collages/home.jpg"
      collage[2].src = "../images/collages/aboutus.jpg"
      collage[3].src = "../images/collages/pormifuturo.jpg"
      collage[4].src = "../images/collages/issues.jpg"
      collage[5].src = "../images/collages/events.jpg"
      collage[6].src = "../images/collages/register.jpg"
      collage[7].src = "../images/collages/contactus.jpg"
    }

  function MakeArray(n)
    {
      this.length = n
      for (var i = 0; i<=n; i++)
        {
          this[i] = new Image()
        }
      return this
    }

  function msover(buttonname)
    {
      if (browser)
        {
          var imageobject = new Image()

          imageobjectname = "document.images." + buttonname
          imagename = "../images/menu/" + buttonname + "-on.gif"
          collageimagename = "../images/collages/" + buttonname + ".jpg"
          imageobject = eval(imageobjectname)
          imageobject.src = imagename
          document.images.collage.src = collageimagename
        }
    }

  function msout(buttonname,pagename)
    {
      if (browser)
        {
          var imageobject = new Image()

          imageobjectname = "document.images." + buttonname
          imagename = "../images/menu/" + buttonname + ".gif"
          collageimagename = "../images/collages/" + pagename + ".jpg"
          imageobject = eval(imageobjectname)
          imageobject.src = imagename
          document.images.collage.src = collageimagename
        }
    }