Simple 2d animation info

Ok totally sorted the problem and addedd some nice "features" :)
Now the sprite roll left & right correctly from the CURRENT frame,and if a joypad isn't pressed for some time the ship reset its position facing up.

width=640
height=480
Graphics width,height,0,1

prova=LoadImage("jet1.bmp")

MidHandle prova
prova2=LoadAnimImage("jet-strip.bmp",43,52,0,5)
MidHandle prova2



Global x=320
Global y=240

While Not KeyHit(1)
assex=JoyX()*2
assey=JoyY()*2
SetBuffer BackBuffer()
Cls
x=x+assex
y=y+assey
If x => 630 Then x=x-2
If x <= 10 Then x=x+2
If startmov=0 Then fotogramma=2
If Not JoyX()=1 And JoyX()=-1
	If MilliSecs()> counter+500 ;millisecs() > start_anim+500 then fotogramma=2
		counter=MilliSecs()
		startmov=0
	EndIf
EndIf
If JoyX()=1 Then 
	startmov=1
	If MilliSecs() > timer + 100
		timer=MilliSecs()
	;EndIf
	current_frame=fotogramma
	fotogramma=current_frame+1
	If fotogramma => 4 Then fotogramma=4
	;Else fotogramma=2
	EndIf
EndIf
If JoyX()=-1 Then
	startmov=1
	If MilliSecs() > timer + 100
		timer=MilliSecs()
	;EndIf
	current_frame=fotogramma
	fotogramma=current_frame-1
	If fotogramma < 0 Then fotogramma=0
	;Else fotogramma=2
	EndIf
EndIf
DrawImage prova2,x,y,fotogramma		

 Flip
Wend

Thanks for the help.