cocoaforge

Hello,
I have unsolved problem, for me.
I have neglected the opened tabs in some of the feeders I use to read. It has, after i have been awaking, many, too many, may be close to hundreds open tabs.
I can't delete them, when trying to click over the small X on each tab. It doesn't respond when clicking and won't be closed.

My question:
How I can "clean" my Vienna from all these tabs?

TIA

Command-W closes windows, or tabs if they are present. You can see the command under the File menu, as in all OSX applications.

Thanks for your useful reply