I am trying to download a couple of pages from this publicly available website:

As you can see it is a list of funds. Downloading the first page is easy, but I would like to do 2 things:
- first change the number of rows to 500 (as with the drop down box near the bottom of the list)
- download all available pages (like clicking the next button)

As these buttons are coded with JavaScript I have no clue how to do this, but if might be handy if i could tell wget to click this buttons for me. Is there a possibility to do such a thing?