Audit - who opened CRM pages

I want to write in audit log who opened crm pages ( view contact, account etc...) what should i do?



with PlugIn registration register to message retrieve for the relevant evtities.



retrieve event appear only if open the edit.aspx page with record.
open edit.aspx in new form, crmForm.FormType = 1 will not exevute the event.



thanks,
Rami Heleg