On my site I have some content that does not fill the page height and some that exceeds the page height.  Obviously, the vertical scrollbar appears when content exceeds the page height, and when it doesn't the scrollbar goes away.  In my skin I would like to force the browser window to display the vertical scrollbar at all times, disabled if the content is not long enough, and enabled if the content is.

Is there a way to do this within the skin?

Thanks.  I added this line to the top of my css file:

html { overflow: scroll;}
 

That works in IE and FF.