Better still - use Opera. This browser lets you have multiple web pages open at once, in a Multi Document Interface (MDI) style. So you can ctrl-tab between the documents, but all your web pages count as only one item on the windows taskbar.
Opera is a nice browser anyway, it's small and fast, and you can use mouse gestures to do things like close the current window, open a new window etc etc. It's much nicer than clicking buttons or using keyboard shortcuts, believe me!
http://www.opera.com/