How do I edit the taskbar application launcher?

[bbmak]

I just replace iceweasel with google-chrome for my dafault browser, and I remove the iceweasel. However, the taskbar application launcher seems not working at all for google-chrome.
I tried update-alternatives command, but somehow, it is not working at all.

How do I change the browser launcher to google-chrome?

[bbmak]

nevermind, I use the debian chromium-browser, it is fine now.