Secunia Research Advisory – Multiple browsers suffer from multiple vulnerabilities. It is possible for a inactive tab to spawn dialog boxes e.g. the JavaScript Prompt box or the Download dialog box, even if the user is browsing/viewing a completely different web site in another tab. It is also possible for an inactive tab to always gain focus on a form field in the inactive tab, even if the user is browsing/viewing a completely different web site in another tab.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/34788/saMultiple.txt
Source: https://packetstormsecurity.com/files/34788/saMultiple.txt.html