There's probably several ways to do this, but this is the approach I'd try:

Create a viewPanel that is to be your frame.

a) inside the viewPanel, add two <xp:include> tags.

b) The first one will be your view.xsp, and has a rendered property dependant on a sessionScope variable displayView==true.  On the view xpage, the entry onclick will set a sessionScopeVariable docId, and set the displayView=false.  refresh viewpanel.
c) The 2nd will be your document.xsp, and also has a rendered property dependant on displayView==false.  The document xpage will have a docid dependant on docId.

 

So when you click on your view entry, it disappears and the document takes it's place.  You'll need some sort of button or event to close the document and redisplay the view, but the logic is the same.