The datepicker in jQueryUI renders with a dynamic position. It renders according to its css if there\'s enough room for it, but if there isn\'t enough window space it tries
Posting this in hopes that it will help others. At least as of v1.8.1 of datepicker, using 'window.DP_jQuery.datepicker' no longer works, because the pointer(right term?) now is named with a timestamp of its creation - so for example it would now be 'window.DP_jQuery_1273700460448'. So now, rather than using the pointer to the datepicker object, refer to it directly like this:
$.extend($.datepicker,{_checkOffset:function(inst,offset,isFixed){return offset}});
Many thanks for the answer below for getting me what I needed.