Map zoom probelm help needed please

Hi i have created a number of plans with a pan and zoom function, however when zooming in the plan gets cut off and the whole plan cannot be seen also the panning from the small navigation seems to follow mous pointer and not the faded box, to make sense of what im saying u can see my problem here

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

if u select ground floor u will see my plan if u navigate using zoom bar and then use small windo t o move around u can see the problem i have the plan gets cut off on the right and shows too much on the left, i have folowed a tutorial to complete this, you can see the fla file here

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

All comments are stated please can someone help really desperate thanx