Pop-up navigation?

Hi there.

I am currently working on a page which is selling their products to 3 different type of customers. All three different customers will have different landing pages.

What i need is some kind of pop-up where the customer can choose if they are a private customer, a business or a wholesaler. I first made a landing-page without menu and logo, where they had to chose which customer type they are. I found a problem with that kind of solution - Google won’t transfer customers to that page, they will send the customer to the site that best match their keywords.

Now i am thinking of building a pop-up which arrives no matter what sub-page they enter.

Someone have an idea what kind of plugin that does what i am searching for?

Best regards,