Trying to change the active page

Hello world!    

     I have an infuriatingly simple issue. Javascript. I am trying to figure out how to set the current active window to a specific hard coded page on a specific hard coded document so I can switch to a page, make selections and modifications on the page then switch to the next page, and reiterate through an entire document all through script without user interaction being necessary. I have tried a number of things but I just cant find any information on this online. Please help!!!