We are building an ASP.NET MVC web application for internal use within our company. Due to the nature of the business, our users can be much more productive if we give them a lot of screen space. Our plan is to give each user two 24" monitors, and design the pages of the application accordingly. We would like to use two browser windows for the two monitors. 

* **The main window** with the input forms (left hand side)
* **The viewer window** where attached documents can be shown (right hand side)

When the user makes a certain change in the main window, I would like to re-render the viewer window by setting a new URL there. **But how can I make the viewer window load a new page in the case of an event in the main window?** To be precise, I want the viewer window to load the same page but with changed parameters (different document ID) in the URL.