function sniveles()
astro=1;
 
while true do controls.read();
if astro==1 then image.blit(0,0,tablamenu[8]) end
if astro==2 then image.blit(0,0,tablamenu[9]) end
if astro==3 then image.blit(0,0,tablamenu[10]) end
if astro==4 then image.blit(0,0,tablamenu[11]) end
if astro==5 then image.blit(0,0,tablamenu[12]) end
if astro==6 then image.blit(0,0,tablamenu[13]) end
if astro==7 then image.blit(0,0,tablamenu[14]) end
if astro==8 then image.blit(0,0,tablamenu[15]) end
if astro==9 then image.blit(0,0,tablamenu[16]) end
if astro==10 then image.blit(0,0,tablamenu[17]) end
if astro==11 then image.blit(0,0,tablamenu[18]) end
if astro==12 then image.blit(0,0,tablamenu[19]) end
if astro==13 then image.blit(0,0,tablamenu[20]) end
if astro==14 then image.blit(0,0,tablamenu[21]) end
if astro==15 then image.blit(0,0,tablamenu[22]) end
if controls.press("left") then sound.play(sonido1,1) astro=astro-1 elseif controls.press("right") then sound.play(sonido1,1) astro=astro+1 end
if astro<15 then astro=1 elseif astro>15 then astro=1 end
screen.flip();
end
end; 

tablamenu={};
for var=1,22 do
tablamenu[var]=image.load("Imagenes/M"..var..".png");
end