source: https://www.securityfocus.com/bid/10997/info
Opera Web Browser is reported prone to a JavaScript denial-of-service vulnerability.
This vulnerability presents itself when Opera attempts to execute a specific JavaScript command. When executing this command, Opera will reportedly crash.
This issue affects Opera 7.23 for Microsoft Windows; other versions are also likely affected.
<scr1pt>
document.getElementsByTagName("script")[0].text = "";
</scr1pt>