I need some direction on the best (and easiest way) to change the fields on a page when different products are selected from the Asset object. 

What I am looking for is when a new asset is added (or edited) to an account the user must select a 'Product' from the Standard Product lookup field.  When the page loads there should be some fields on the page that are specific to the product that was selected. 

Is this best for page layouts? A Trigger? Some Apex code?

All help is appreciated.

Hello everyone!

We have 26.000 leads, and we would like to know how many leads have Linkedin profile!

Is there any way to map our lead database with Linkedin?

Thanks in advance!