If your swf extends the height of the browser, the standard browser scrollbar appears.
If you just opened your site, and have NOT clicked inside the browser, on your swf area, the browser will scroll vertically with the up/down keys.
If you click your swf in the browser, the up/down keys no longer register with the Browser, and you cannot scroll vertically.
Is anyone aware of a way to remedy this problem? My first thoughts are maybe sending external interface commands to a javascript function to simulate the up/down scroll, but I'm not positive if javascript can control a browsers scrollbar, and whether there are problems cross-browsers with that.