I will do this tomorrow.
Now I have other idea to solve my problem.
The plan from the beginning is to use this computers as web kiosks - after launching, any browser (opera) should be opened in full screen mode (i can make it) and display the indicated web page (this also I can make). After the system has been shut down improperly and restarted, it should also display the indicated page. Except to displaying a simple HTML page, they are not supposed to do anything more. Site to display is one of the company's internal pages - simple HTML (there are no flash content or anything like that).
Except of displaying this simple page, computers will not have any other tasks, there is not touchscreen or none of these things, no mouse or keyboard will not be attached to the computers. Showing the page will be it’s only task and it will not be required to do anything more.
So the idea is to rotate only webpage with some javascript?
javascript: document.body.setAttribute( "style", "-o-transform: rotate(-90deg);");
But how to make it permanently ?