Zoom in fuctionality

Hi All,

I have a swf files who has a customised cusor.
I want that, on clicking on this flash file the file should zoom
on second click it should zoom more and
on third click it should zoom out,
on fourth click it should reset to 100%.
or on normal swf when we right click we get a zoom option this should come on left click it self.

Please can u help me in making such fuctionality. I am in great trouble.