Here's what should be a simple and quick way to achieve this: (well as far as I know anyway!)
In the "Init" field of each of the item You want to float over the others, type:
[This] Exec "GravitySucks.sqs"
And thats what the "GravitySucks.sqs" script should look like:
_Obj = _This Select 0
_X = (GetPos _Obj) Select 0
_Y = (GetPos _Obj) Select 1
_Z = (GetPos _Obj) Select 2
_Obj SetPos [_X, _Y, _Z + 1]
Exit
PS: You can adjust the height with the number after the +