With the release of patch 3.3, Blizzard removed the ability to move/resize the quest/objectives tracker.
QuestMover is a small addon that attempts to restore the old functionality without adding a lot of extra bloat. It detaches the quest tracker from the minimap and allows you to move and resize it (vertically).
Added resizing grips on the bottom right and left corners. You can only resize the tracker vertically at this time. If you'd like to make it wider, go into WoW's options under Objectives and check Wider Objectives Tracker.
Shift-clicking the collapse/expand button opens the Achievement frame. Right-clicking opens the Quest Log.
There may be some bugs in this release. If you have any errors please report them in the comments section and I'll try to work on it when I can.
v1.1: Incorporated suggestions from the comments. Now draggable --(thanks to Redwood Elf). Resize by editing QuestMover.lua and changing WatchFrame:SetScale(1.0) --(thanks to Vranx)