Хороший пример использования CSS-свойства text-shadow:
The CSS 2 property text-shadow is supported in
Safari since version 3 (also available for Windows), Opera since 9.5, Firefox since 3.1,
Google Chrome since version 2, Konqueror and iCab.
In fact, text-shadow is supported by all browsers that are based on WebKit,
the rendering engine behind Safari and Chrome. Internet Explorer 8 does not support such text shadows
(except for some DirectX image transform filters).
// maettig.com
Немного о генерации теней через картинки (GIF и PNG с альфа-каналом)
Much used, oft maligned but always popular, drop shadows are a staple of graphic design. Although easy to accomplish with image-editing software, they’re not of much use in the fast-changing world of web design … until now.
// www.alistapart.com