there is no such thing as tricky webpage. I assume your question is how to fill the form and not about disabling events. see https://www.autoitscript.com/forum/topic/153520-iuiautomation-ms-framework-automate-chrome-ff-ie/ and to see if your page is really the problem check what you can do with javascript in your addressbar and if you get same tricky behavior 1. go to www.autoitscript.com/forum 2.type in addressbar:     javascript:document.getElementById("elSearchField").value="IUIAutomation";vo