loading a view in popup
If I need to display a view in popup, then I will use ctools module.
Ctools provide Modal dialog functionality to display element in modal.

You need to follow below step for the same:


Create a custom module.
Create Menu item which will interact with ctools modal.
Define ajax callback for the menu item and return HTML of the modal using ajax.


You can check working example (http://deeson-online.co.uk/labs/insert-form-pop-modal-ctools-and-drupal-7)