Google - Escaping user input for various contexts.
http://code.google.com/docreader/#p=doctype&s=doctype&t=ArticlesXSS
Styling File Inputs with CSS and the DOM - Javascript
http://www.shauninman.com/archive/2007/09/10/styling_file_inputs_with_css_and_th...
Input forms without tables
http://www.alistapart.com/articles/prettyaccessibleforms