Wht is the event that triggers very very last in form rendering process?

Hello

Pls. let me know what is the very very last event that triggers in the form rendering on IE browser process

or

in other words, wht is the triggers just prior to form rendering, bcz I want to put some JS (app.runtimeHighlight = False)

I wrote in Initialization, LayoutReady, docReady, Calculate but no luck!

Thank you