Android and gTalk

I have three Gmail accounts. All of them are configured on my Samsung Galaxy 5. My phone is on Wi-Fi almost every time so accounts are always active. Gmail has an ability to chat. The problem is when I connect to one of my Gmail accounts using computer, I can only see in gTalk that only one my Gmail account is active, online. Always one and always the same... though all three accounts are online on my phone and ready to receive mails or talks. Others are always shown as offline. Maybe there is a program which helps to do this, or maybe the idea is that this active account is the first on my phone? Is it possible to do that all accounts would be shown as active in gTalk? Thank You all in advance.