/*
This script was written to accomodate a scrolling JPG image 255 pixels × 1600 

pixels in a movie 255 px × 234 px. Just add it to your movie clip and adjust the number and instance name as 

needed.
*/

onClipEvent(enterFrame) {
   //Adjust this number based on the size of your image
if (_x>-545) {
   

//adjust the speed by changeing the number
_x = _x - 8
}
   //Adjust this number based on the size of your image
   // 

Change 'background' to whatever your MC's instance name might be 
else (setProperty(background, _x, 800))

}