When I execute my Framework in a browser some of my icons and bitmaps don t display properly

Visual LANSA Framework

When I execute my Framework in a browser some of my icons and bitmaps don't display properly?

The shipped Framework icons should display correctly when displayed in a browser. The small bitmaps for applications and business objects are not displayed in the web version of the Framework. If you have added your own icons, you need to create two equivalent gif images for each of these icons. One gif must be 16x16 pixels, and one must be 32x32 pixels.