I had one going that was like what you're talking about.. and it's actually pretty easy to make your own
just name those objects (tar1 and tar2 for my example ) and use alot of setpos commands, thats about it really .. would look something like this:
tar1 setpos [getpos this select 0, getpos this select 1,1]
~2
tar1 setpos [getpos this select 0, getpos this select 1,0]
~2
tar2 setpos [getpos this select 0, getpos this select 1,1]
~2
tar2 setpos [getpos this select 0, getpos this select 1,0]
basically you just do that over and over for however many targets you have.. then make it loop for a continious effect.. the syntax I used will make the target lift a meter off the ground, hold for two seconds, and then drop back down ..
Of course you can put a setpos command in the targets init field to make it start "down"
have fun with it :toocool: