Change default view for PartyList type field.

In the Phone entity (CRM 2011) the Recipient field is of type "PartyList".  When clicking on the dialog lookup it defaults to "Accounts" and I would like it to default to "Contacts".  Is there a JavaScript function or XML change that can be made to make "Contacts" the default?  I've been unable to find anything like this for CRM 2011.

Thanks,

John.