Hey guys, I have some rocks that I want to hover in the air

I'm really bad at this part of scripting, but I have a faint idea on how to do it.

I want the script to work on whatever object I put it on if its possible so i have to use some sort of getself but I don't know how to use it.

Rocks don't have havok. Just placing them in the air will make them float, although you may be able to see through them if you look from below.

I know but I want them to move a bit up and down so it looks like they are hovering not just placed in the air

Well, that'd require an animated version of the stone(s) as far as I know.

You may adapt http://www.gamesas.com/index.php?/topic/632323-reqwip-modfood-snippets-tips/page__view__findpost__p__13319870 to move an object up and down when activated.
Just change it to a continuous movement.

Hmmm I don't want to activate the object myself but I guess I would make a script which activates the object when the player enters the cell?

like

Begin Gamemode If player.getincell blablabla Activateendif

But I have one more Question concerning the script you linked me to, will it work on every object i put it on or do I have to change xobject so it fits each single stone?

I meant that you could adapt the script to keep the object moving up and down, without the need of activating it

Something like this [not tested]

begin gamemode	if xObject == 0		; First time only: set vars		;======================		; xStdSpeed positive: Object will initially go up 		; xStdSpeed negative: Object will initially go down		;======================		set xObject to GetSelf   ;  aaqqPlatform ; aaqqPaint		set xStdSpeed to -5 ; <<< Change to your liking  (units per second)		set xMaxDisplacement to 100   ; <<< Displacement limit		set xPosZ to xObject.getstartingpos z		if xStdSpeed > 0			set xPosMin to xPosZ			set xPosMax to xPosZ + xMaxDisplacement 		else			set xPosMax to xPosZ			set xPosMin to xPosZ - xMaxDisplacement 			set xStdSpeed to -xStdSpeed 		endif	endif	set xPosZ to xObject.getpos Z + xSpeed * getsecondspassed	if xPosZ > xPosMax		set xPosZ to xPosMax		set xSpeed to -xStdSpeed	endif	if xPosZ < xPosMin		set xPosZ to xPosMin		set xSpeed to xStdSpeed	endif	xObject.setpos Z xPosZ	xObject.reset3Dstateend

Note that I changed the setting of xObject to GetSelf, so it will work on the object(s) the script is attached to.

Note also that you need to turn the stone mesh into an activator (or any type of object that can have a script), because, usually, rocks are Static, which do not accept scripts.