Simon Willison’s Weblog

When Bugs Collide: Fixing Text Dimming in Firefox 2. Handy tips from Drew on fixing the glitchy text rendering in Firefox 2 when you animate opacity without breaking alpha-transparent PNGs in IE6. 19th June 2008, 6:09 pm

A brief introduction to Opacity and RGBA. The CSS opacity property is inherited by an element’s children; opacity set using the new rgba() declaration in CSS 3 differs in that it is not inherited. 17th March 2008, 2 am

Styling File Inputs with CSS and the DOM. Clever hack to style the un-stylable: set the opacity of the file input to 0, then use a bit of JavaScript to make sure the (now invisible) browse button is always under the mouse. 10th September 2007, 11:58 pm