@document-start Example: hijack page scripts By dindog — Last update Oct 8, 2012 — Installed 770 times. The implement of @run-at document-start greatly extent what userscript capable range. This snippet is one of the example show how to interfere the original script before they run, instead of stay away until the DOM is ready ( DOMContentloaded event fired ). Intro & UsageWhy using @run-at documen