Visit the BBc radio 1 website. The impact of the site is the work of graphic artisits and designers. For developers, it is important to know the implementation techniques for embedding grahics and choosing the appropriate graphics format. We will cover these techniques in the exercises with background images and graphics menus. However, there is a certain amount of graphics manipulation that is desirable. Consider the two images of Venus. Whilst the background colour is sometimes necessary, the manipulated image with background opacity is sometimes desirable.