What Sandman said is correct, and more than likely you have air in the Master Cylinder. You can relocate the reservoir, but it isn't really necessary. After bleeding the brake line just top off the reservoir every 3 or 6 months. If there is no air in the reservoir it won't matter where it is located.

Tom

Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety. Benjamin Franklin, US author, diplomat, inventor, physicist, politician, & printer (1706 - 1790)