An improvement to a graphical user interface disposed within a display includes a functional scrollbar, a magnifier disposed on the functional scrollbar to enhance the view of the functional scrollbar, and a filter for selecting attributes of data within a data file. The functional scrollbar includes two parts, one that has a plurality of portions indicative of content of the data file shown on the display and one that has a plurality of portions indicative of content of the data file not shown on the display. The two parts of the scrollbar include portions indicative of content within the data file that matches the filter selection. A system for generating a functional scrollbar is also described and claimed.