Detect if website visitor has toolbars installed eg. Google toolbar using javascript
问题 I am working on an online education website that frequently uses pop up windows. This is part of a learning management system from a third party provider so not possible to change the way this works. We get lots of helpdesk calls with users stuggling with popup blockers - in their OS, browser settings and additional toolbars. I am using javascript to sniff browser and OS so we can display appropriate pop up blocker instructions onscreen. Is it possible to do similar technique to detect