http://en.wikipedia.org/wiki/Swastika
The swastika (from Sanskrit स्वस्तिक svastika, from su "well", and asti "being", thus "good fortune" or "well-being") is an equilateral cross with its arms bent at right angles in either left-facing (卍) or right-facing (卐) direction. The swastika is a sacred symbol in Hinduism, Buddhism and Jainism. The Hindu version is often decorated with a dot in each quadrant.
However, in the Western world, it is most widely known and used as a symbol of Nazism (the Hakenkreuz (hook-cross)) and this political association has eclipsed its historical status as the fylfot.
It is traditionally oriented so that a main line is horizontal, though it is occasionally rotated at forty-five degrees.