[SalesForce] Add Scrollbar to Visual Force, dependent on Window Size

I have a Console component which is a Visual Force page; this one opens up from a ribbon tab in the bottom and is by default attached to this ribbon menu. I have the ability to de-attach this one so it is basically a large popup window which is re-sizeable. I need to add scroll bars to this visual force page since it will hold multiple tables which different number of rows depending on user input. There is also a desire to have this window in full screen so I need to have some sort of re-sizeable scroll bar depending on the actual height/width of the window.
I have a scrollbar but that is dependent on the Height I set, predefined:
What I need is a way to set a scrollbar for my Outputpanel dependent on the height of the Window, can anyone help me with this? My layout structure is according to this:

<apex:PageBlock>
<apex:PageBlockSection>
<apex:OutputPanel>
***Scrollable content***
</apex:PageBlock>
</apex:PageBlockSection>
</apex:OutputPanel>

Best Answer

If the browser isn't adding it automatically, check your apex page starter at the top - do you have scroll bars turned off because you're using it in the console?