Please see this →
http://colors.carlsednaoui.com
when you move your cursor the Pop will appear → such features are often used to minimise bounces and capture the lead.
But the above example is a very narrow one. I mean I searched and could not find jquery/Javascript plugin that has lots of features such based on how many pages someone has navigated then some pop will open. How much one has navigated the page: I mean if the page is big and says he has navigated so that 70% scroll bar has come down then some pop should appear etc. Is there any such plugin that already exists that I can’t search?