Add Background Effects
You can add background effects to enhance the appearance
of your report. You can enhance objects, such as data containers
(lists, crosstabs, and charts), headers, footers, page bodies, and so
on with borders, gradient fill effects, drop shadows, and background
images. You can also apply background effects as a class style.
The background effect is rendered within the rectangle area that bounds the object. To use a generated background in a chart, the chart must have a fixed size.
If the background image is complex and large, the size of the report output may be affected proportionately.
Background effects are rendered only if the data container has a fixed height and width; if a percentage size is used, the effects are ignored.
Resizing or overflow behavior is ignored for generated images in HTML reports.