setTextureAnim - also along Y-axis

float fSleep = 0.02; //speed
string sTexture = "5baee477-ea6d-bd2e-c213-c99a4393796f"; //put texture key here

integer iLink = LINK_THIS; //linknumber
integer iFace = ALL_SIDES; //linkface
float fRotation = 0.0; //texture rotation
vector vRepeats = <1.0, 1.0, 0.0>; //repeats
integer iANIMATE_X = TRUE; //set this to TRUE or FALSE, if you want to animate along the X-axis or the Y axis, according.
integer iDIRECTION_POSITIVE = FALSE; //set this to TRUE or FALSE if you want to swap directions from negative to positive animation-direction, according.
float fStepwidth = 0.01; //jump per animation-frame



float fStep = 0.0; //global variable, don't change
setTextureAnim(string stexture, integer ilink, integer iface, float frotation, vector vrepeats, integer animatex, integer directionpositive, float fstepwidth)
{
    vector vOffset = <fStep, 0.0, 0.0>;
    if (animatex == FALSE)
    {
        vOffset = <0.0, fStep, 0.0>;
    }
    llSetLinkPrimitiveParamsFast(ilink, [ PRIM_TEXTURE, iface, stexture, vrepeats, vOffset, frotation]);
    if (directionpositive)
    {
        fStep = fStep + fstepwidth;
        if (fStep > 1.0)
        {
            fStep = 0.0;
        }
    }
    else
    {
        fStep = fStep - fstepwidth;
        if (fStep < 0.0)
        {
            fStep = 1.0;
        }
    }
}
default
{
    state_entry()
    {
        llSetTimerEvent(fSleep);
    }
    timer()
    {
         setTextureAnim(sTexture, iLink, iFace, fRotation, vRepeats, iANIMATE_X, iDIRECTION_POSITIVE, fStepwidth);
    }
}