Users can scroll the page by clicking on it and dragging the mouse, similar to the functionality found in the Acrobat viewer.
The JavaScript Source: Page Details: Grab and Scroll Page
Simply click on the "Highlight All" button, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Command-s). The script is yours!!!