hi, i had the same problem i.e the web pages as well as word document and all application moving up and down, initially i was not able to rectif it, i thought it may be due to mouse but recently my friend suggested me that it's due to Worm a type of virus and he asked me to uninstall and spyware and install the anti virus software and run the application, i installed kaspersky anti virus, the problem is rectified and the system is back to normal.
Suggest you to install antivirus and if still you find or have problems please email me at karthickusa******.com !!