http://www.internovitas.com/site/main.htm
You can see that when resizing the browser window, the layout resizes as well. However, when you resize it too much, the main image (eagle) starts to disappear:

What I'm trying to do is to stop the layout resizing once the left border of the eagle image reaches a certain position relative to the left border of the browser window (say, 320px from the left border of the browser window). It would look like this:

From the point when the image reaches 320px from the left border of the browser window the layout should not resize at all. Of course, the browser window could be resized further but in that case the horizontal bar should be used to see the whole width of the page.
Anyone could help me achieve this?