But of course you just want to get rid of them. This is where the trouble begins. You have to specify three different attributes, to satisfy all browsers. Everyone seems to want to reinvent the wheel on this. Then everything will be fine in all browsers.
Next thing is the scroll bars.
Much like the normal web page, scoll bars will appear, if your page does not fit in the frame. I don't know about you, but I find them hidious in the middle of a webpage. No scroll bar will ever appear. To see the difference, press the show me buttons on this page, and resize the window so the text doesn't fit inside anymore. There is a huge problem with this, when the page is larger than the frame.