function over(listEntry) {
    listEntry.className = listEntry.className + " over";
}

function out(listEntry) {
      if (listEntry.className == "forumreihe over") {
          listEntry.className = "forumreihe";
        }
      else if (listEntry.className == "forumreihe") {
          listEntry.className = "forumreihe";
        }
      else {
          listEntry.className = "forumreihe";
      }
}