Ability to zoom

I want my extra large image to open zoomed out so you can see the whole thing but have a little magnifying glass cursor that would allow me to zoom in to 100%.
When I use the flexible layout options it only will scale to my browser window size, and I want to zoom in more.
http://ianscottberry.com/DigitalRetouchFashion1.html

The best solution I can think of is another scene with an instant jump.

Did you want to zoom in to the left margin too, and zoom out ?