Hello & Welcome to JustAnswer. I'm Kamil and i will do my best to assist you.
Do you mean that while you are reading it randomly scrolls the page up/down?
Please leave a message when you are ready.
no, it jerks down missing half the following item
Please Click Here to download an application. The application will automatically be downloaded.
Click Here (run and install this application)
Then check if it makes any difference.