JavaScript error networking

i get this errors in my javascript.networkmenu Assets/scripts/NetworkMenu.js(33,24): BCE0023: No appropriate version of 'UnityEngine.Network.Connect' for the argument list '(UnityEngine.HostData[])' was found.Assets/scripts/NetworkMenu.js(74,31): BCE0017: The best overload for the method 'NetworkMenu.JoinServer()' is not compatible with the argument list '(UnityEngine.HostData)'.

this is my script: #pragma strict

 var typeName : String = "UniqueGameName";
 var gameName : String = "RoomName";
 var hosts : HostData[];
 var _NetworkView : NetworkView;
 var madeaserver : boolean = false;
 var msEvent : MasterServerEvent;
 var hostdata : HostData;
 var newPlayer : NetworkPlayer;
 var i : int = 0;
 function Start () {
 
 }
 
 function Update () {
 
 }
 
 private function RefreshHostList()
 {
     MasterServer.RequestHostList(typeName);
 }
 
 function OnMasterServerEvent()
 {
      if (msEvent == MasterServerEvent.HostListReceived)
         hosts = MasterServer.PollHostList();
 }
 
 private function JoinServer()
 {
     Network.Connect(hosts);
 }
 
 function OnPlayerConnected ()
 {
     _NetworkView.RPC("GetNetworkPlayer", RPCMode.AllBuffered, newPlayer);
 }
 
 function OnConnectedToServer()
 {
     Debug.Log("Joined Server");
 }
 
 private function StartServer()
 {
      Network.InitializeServer(4, 25000, !Network.HavePublicAddress());
         MasterServer.RegisterHost(typeName, gameName);
 }
 
 function OnServerInitialized()
 {
     Debug.Log("Server Initiliazed");
     madeaserver = true;
 }
 
 function OnGUI()
 {
  if (!Network.isClient && !Network.isServer)
     {
         if (GUI.Button(new Rect(100, 100, 250, 100), "Start Server"))
             {
             StartServer();
             }
     }
  if (GUI.Button(new Rect(100, 250, 250, 100), "Refresh Hosts"))
             RefreshHostList();
         if (hosts != null)
         {
             for (i = 0; i < hosts.Length; i++)
             {
                 if (GUI.Button(new Rect(400, 100 + (110 * i), 300, 100), hosts[i].gameName))
                     JoinServer(hosts[i]);
             }
         }
  }

any help would be appriciated