Konsole vertical tabs (like Mozilla FireFox tree-style tabs add-on)

Where are the options for vertical tabs in Konsole? The default behavior, for some reason, is to have horizontal tabs. I would much rather cycle (and scroll) vertically than horizontally. Maybe I'm overlooking this feature somehow. If not, what is another SSH client that supports vertical tabs and and the transparency (alpha channel) like Konsole? I'm having quite a time looking for this.

Thanks in advance