Simon Willison’s Weblog

Pseudo-custom events in Prototype 1.6. Useful tutorial showing how to use Prototype 1.6’s custom events to implement a cross-browser mouse wheel event.

Posted 9th November 2007 at 11:02 pm

Recent articles

Olmo 3 is a fully open LLM - 22nd November 2025
Nano Banana Pro aka gemini-3-pro-image-preview is the best available image generation model - 20th November 2025
How I automate my Substack newsletter with content from my blog - 19th November 2025

andrew-dupont 1 customevents 1 javascript 725 mousewheel 1 prototype 16

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe