jQuery Zoom Plugin

My issue is that I'm making a zoom plug in jQuery. The situation is that when I click on smaller picture it gets popup where I can scroll the picture means that i can change its width height on scroll dynamically and can move it means i can change its left n top position dynamically... my problem is that when picture gets popup, moving effect starts but I want to start moving effect a开发者_如何学Pythonfter scrolling once? Can anybody help?