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With the rise of widescreen monitors, many users would like the tab bar on the side of the screen instead of the top. Add-ons like TreeStyleTabs are popular for Firefox users, but until now, nothing was available for SeaMonkey. I went back and found that VertTabbar has some SeaMonkey support, so I ported it and restyled it for SeaMonkey. Tested on both Classic and Modern themes,
