See carlgerman.com/jquery/hello-world for a downloadable au3 project and library here: autoIT IE browser automation
The scripts use the ability to inject javascript to automate the IE browser.
This script uses the autoIT IE COM library and that is why it is for IE browser automation only.
It is then a simple matter of using the BugBuster plugin for Chrome or plugin of your choice to get a unique CSS selector and the in-page JQuery helps in the background.