jQuery animated "scroll into view" plugin (with additional ":scrollable" selector filter)

Sometimes our pages have to deal with long(er) unpaged lists of data. Long enough to fall off the viewable browser window estate. Actually you don't even have to deal with lists at all. Let me re-define the problem: when you have a scrollable element on your page (may be the very body of it) and you need to programmatically scroll to its out-scrolled child element, then this jQuery plugin is just for you. Now let's see when we have to do this and what could go wrong.