Show specific page when opening Account window

Following on from my previous Dynamics CRM question (Show popup/alert if account has related entity records)

In the OnLoad event of the Account form, I want to set the window to open with a specific sub-navigation item loaded into the right-hand frame.

For example, by default, when you open the Account window, it loads the account details. Listed on the left are various related items. I have a custom related entity called Alert. If a specific criteria is met in my javascript, I want the Alert entity view to be loaded into the right-hand view instead of the Account details.

Is this possible?

---