I want to write code {hack or zimlet} for the Zimbra Web Mobile client. You can see what I am talking about by logging in to your https://zimbra.domain.com/m/zmain

When you log into the web /m client you get five icon tabs/menu across the top of your screen. Mail | Contacts | Calendar | Folders | Search

I want to add a sixth icon to this tab menu. Is there a tutorial for this?