谁能提供个javascript+XML三极连动下拉框的

谁能提供个javascript+XML的三极连动下拉框
不尽感谢~  
XML格式如下 GAME为游戏 GameArea为区  GameRaces为服务器
<?xml version="1.0" encoding="utf-8"?>
<GameRoot>
  <Id>31C09382-D6CF-4371-A15F-33572299BFC8</Id>
  <Games>
    <Game>
      <Id>84d9d1cac94b4cd99b98705b54a0c28f</Id>
      <Name>游戏1</Name>
      <GameAreas>
        <GameArea>
          <Id>4c00cea3eb984a52bd35a369eaac662b</Id>
          <Name>1区</Name>
          <GameServers />
        </GameArea>
        <GameArea>
          <Id>2fa2f7208b1c4b738d149a753c2e5de2</Id>
          <Name>2区</Name>
          <GameServers />
        </GameArea>
        <GameArea>
          <Id>23e181a4ed5746839d85ae0f97acb47e</Id>
          <Name>3区</Name>
          <GameServers />
        </GameArea>
      </GameAreas>
      <GameRaces>
        <GameRace>
          <Id>4b60aee9cb544df1a87ffdf35b5bf3de</Id>
          <Name>天使</Name>
        </GameRace>
        <GameRace>
          <Id>c9be28349464447ba486b1dc0f8f9caf</Id>
          <Name>蠕虫</Name>
        </GameRace>
      </GameRaces>
    </Game>
    <Game>
      <Id>2bbb7057f0624e69bb4bf95fda4012b4</Id>
      <Name>游戏36</Name>
      <GameAreas>
        <GameArea>
          <Id>832c44ee4a6746dabd2fb1f380fe534a</Id>
          <Name>1区</Name>
          <GameServers>
            <GameServer>
              <Id>41c12a66ea6849c0ad80792ef40c896e</Id>
              <Name>1服</Name>
            </GameServer>
            <GameServer>
              <Id>0bba9e68e7744286a93dadae94fd8f71</Id>
              <Name>2服</Name>
            </GameServer>
            <GameServer>
              <Id>1b3e6dc39f9f41efbbdf536c679fba3a</Id>
              <Name>3服</Name>
            </GameServer>
            <GameServer>
              <Id>266145b8d5e94c36812eeb4dfdceb4a2</Id>
              <Name>4服</Name>
            </GameServer>
          </GameServers>
        </GameArea>
        <GameArea>
          <Id>4b332c481d684904b31f9d37c83027a7</Id>
          <Name>2区</Name>
          <GameServers>
            <GameServer>
              <Id>16806a41bce14f5c8d9ef47e915b19c7</Id>
              <Name>a服</Name>
            </GameServer>
            <GameServer>
              <Id>8c4d20e6af444183881a95e0e4eb516e</Id>
              <Name>b服</Name>
            </GameServer>
            <GameServer>
              <Id>b9972ace89cf40a4a9ea1887e97665cf</Id>
              <Name>c服</Name>
            </GameServer>
            <GameServer>
              <Id>f007f6dc58fb45e995539da17c3a860e</Id>
              <Name>d服</Name>
            </GameServer>
          </GameServers>
        </GameArea>
        <GameArea>
          <Id>504f46ec1dc748ce8fddf7df48abf293</Id>
          <Name>3区</Name>
          <GameServers>
            <GameServer>
              <Id>6a9071f106e74a8f8429f3020802237d</Id>
              <Name>1st服</Name>
            </GameServer>
            <GameServer>
              <Id>4f81e424aaf948a0922d198a27f13c6e</Id>
              <Name>2nd服</Name>
            </GameServer>
            <GameServer>
              <Id>99162392e7144255bde583d53d856945</Id>
              <Name>3rd服</Name>
            </GameServer>
            <GameServer>
              <Id>0de5d3570ca842ff825f73798619ee56</Id>
              <Name>4th服</Name>
            </GameServer>
          </GameServers>
        </GameArea>
      </GameAreas>
      <GameRaces>
        <GameRace>
          <Id>7968d33b33ce47fbbc255cf9b13374d6</Id>
          <Name>天使</Name>
        </GameRace>
        <GameRace>
          <Id>617080968983447b98106366012a90e8</Id>
          <Name>蠕虫</Name>
        </GameRace>
      </GameRaces>
    </Game>
    <Game>
      <Id>92c737c31eff45f196f22b98024593eb</Id>
      <Name>游戏38</Name>
      <GameAreas />
      <GameRaces />
    </Game>
    <Game>
      <Id>c7af08be327c4e3dba49eab63bd3a6e7</Id>
      <Name>游戏381</Name>
      <GameAreas />
      <GameRaces />
    </Game>
    <Game>
      <Id>32cd82e3db7b4724866ee3a40f378359</Id>
      <Name>游戏381</Name>
      <GameAreas />
      <GameRaces />
    </Game>
    <Game>
      <Id>477fd21db753482a8abc4754860cfb75</Id>
      <Name>eeeeeeee</Name>
      <GameAreas />
      <GameRaces />
    </Game>
  </Games>
</GameRoot>