After the discussion about PNG/GIF, i've found this information about PNG support in browser on libpng.org: http://www.libpng.org/pub/png/pngapbr.html (current status of PNG support level in browser) http://www.libpng.org/pub/png/pngs-img.html (samples to test your browser capabilities in displaying PNG images) Salutations. Eric COUTIER Direction Qualité Groupe Faurecia Beaulieu Tel/Fax: 03.81.37.51.39 | 03.81.37.50.70