AS problem in panning, zoom map! Desperate!

Hi I have created a Flash Site in which i have a series of plans, I have followed a tutorial and got the map to pan and zoom. However when the map zooms in fully it doesnt show the right hand side of the map it seem o be restricted and the mini map doesnt move according to the box, it seems to follow mouse pointer, can someone please help, the .fla is here

www.freshlemon.co.uk/ppm/plans.fla

The action script used is from a tutorial and is commented but i just ant seem to solve the issue, so hope someone can help