how do I open an iview in a FULL pop up window

I am trying to open an iview in a new window, and I want to display this new window in full page. I tried "FULL_PAGE" in the drop down option for Height Type. But it didn't work. I know that you can display the pop window in a full screen mode in "Window Features" field in the iview, but full screen is not what I am looking for. I want to make the window maximized instead of full screen (which won't have the "x" close button).

Please help! Thanks in advance.