THIS OUGHT TO BE SIMPLE but can anyone figure out a GENERAL method of determining which scrollbars are currently displayed. ( active)
(document.height and width properties are not appropriate for xml documents and computed style assumes you know the root tag) It appears that pageYOffset and pageXOffset provide a basis for an (awful) answer i.e. scroll the current content by one pixel and then check the new offset value. If the new value is zero then no scrollbar is displayed. If non-zero then the content has scrolled and needs to be reset back to its original value. The problem here is that the checking is done via the onoverflow or underflow event. The process of restoring the original value at document extremities may cause unpredictable effects ( an infinite loop of scroll tests) SURELY there is a better javascript test???
