How to get left and top values of a image?

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C#

Javascript

CSS

C#4.0

Hello, I am using jquery Iviewer for image editing.

When the user zooms in/out an image in div, it get zoomed and fit to the div container(user can pan image).

I need to save the zoomed image with fixed width and height, for that , I need the left and top position of the image in the div with respect to the zoom width and height.

How can I calculate the left and top position of the image in the div, for 250X250 size?considering the left and top values of the image when zoomed to a different size?

for example:

zoomed height and width : 350X250;

left and top for this height and width: -10;20(as user can pan the image in div)

now I want the left and top for the fixed height 250*250, so that I can redraw image with this left and top on the fixed size image for saving it.

either C# or Jquery is okay,

thanks in advance..