Connection to custom server application

Hi.

How can I connect to my custom server application throw JavaScript (HTML5) SDK? I cannot find information in documentation or client SDK.

this.peer = new Photon.PhotonPeer("ws://192.168.85.217:9090", '');

For example in .NET:

// connect
client.connected = false;
peer.Connect("192.168.85.217:4530", "MyCustomServerApplication");

Best regards.