AS3 Dragging Performance

Hi All,

I have written a demo to pan an image up and down.

But it seems to me that the code is not very optimised.

The image I load in is quite high res, therefore I apply a scale to fit it to 100% width and height of the browser. It seems quite laggy on firefox.

I have attached the source for my demo.

Please give me some tips and tricks to improve my work.

Many thanks!

PS: the image is too huge to be attached, I have the link of the image to be downloaded here: -
http://www.outdooralabama.com/photos/images/05scenic1.jpg

Dan