Webbrowser and layout changing of current page

Hi,
I`ve spent a lot of time looking for a solution for my problem.
I believe I find it here.
My problem is:
I`am developing an application in C# that in fact is a webbrowser with a small extension.
That extension applies to what happens when I resize the window of the webbrowser
or press Ctrl++ several times (zoom).

Resizing: When I resize a window of webbrowser (popular webbrowsers), some objects
on the current page are invisible and I have to scroll horizontaly to see it again.
My webbrowser have to move these objects so they will be visble without need of horizontal scrolling(only vertical).
I think that the only way how to do this is to change style for these objects.
And here is my problem.
I can catch pressing Ctrl++ or window resizing but I dont know how to make these moving actions.

I`ll be thankful for any ideas.