how to fix this?

[Newcommandment]

how do i fix the scrolling marque so it will look smother and not just slap back to the starting spot



here is the coding i am using

[SelectBG 0] ;select top
type  = anim
actionno = 100
layerno = 0
start = -159,84

[SelectBG 0] ;select right
type  = anim
actionno = 101
layerno = 0
start = -159,84

[SelectBG 0] ;select bottom
type  = anim
actionno = 102
layerno = 0
start = -159,84

[SelectBG 0] ;select left
type  = anim
actionno = 103
layerno = 0
start = -159,84

[Begin Action 100]
100,8,0,0,6
100,8,10,0,6
100,8,20,0,6
100,8,30,0,6
100,8,40,0,6
100,8,50,0,6
100,8,60,0,6
100,8,70,0,6
100,8,80,0,6
100,8,90,0,6
[Begin Action 101]
100,7,310,0,6
100,7,310,10,6
100,7,310,20,6
100,7,310,30,6
100,7,310,40,6
100,7,310,50,6
100,7,310,60,6
100,7,310,70,6
100,7,310,80,6
100,7,310,90,6
[Begin Action 102]
100,4,0,305,6
100,4,-10,305,6
100,4,-20,305,6
100,4,-30,305,6
100,4,-40,305,6
100,4,-50,305,6
100,4,-60,305,6
100,4,-70,305,6
100,4,-80,305,6
100,4,-90,305,6
[Begin Action 103]
100,6,0,0,6
100,6,0,-10,6
100,6,0,-20,6
100,6,0,-30,6
100,6,0,-40,6
100,6,0,-50,6
100,6,0,-60,6
100,6,0,-70,6
100,6,0,-80,6
100,6,0,-90,6

[shootYr.]

Add More Animelements So That It Looks Like It Loops.