How to make list and thumbnail view

I have a web application in which I list a lot of movies, by now I load a thumbnail for each one of them, but when the list of movies is very largue the page stays loading and loading. So, I'm thinking on offer to ther users 2 views: thumbnail view and list view (this one is for faster loading).

So, which options do I have to achieve this? I ask this questions because there are some topic to consider as:

1.-I can make 2 views and hide one or another (listview or thumbs), but, in the case that the user chooses list view how do I prevent that the pages even stays loading the hidden images? (or should I leave it in this way?) 2.-Is good to have 2 panels (one for every kind of view) and just hide a show? or normally how is it done?

I want to make it very clean, understandable and optimized. Thank you