This project is only for invited freelancers.
Making a sliding from the right div with full height which appears on link click. The best way to implement this is to give the link a specific class that triggers the sliding div to appear. The link target content should appear with ajax within this div.
The div should have close button as well.
Easy styling possible via css.
PrettyPhoto, LightBox or any other script can be used and modified to fit the needs.
Integration with the existing website structure and functionality is a must.