How do I edit the position of a drop down menu in an HTML table?

If you visit the link I posted, you'll see what's called an OEM parts ordering page. If you scroll over the years, you can see the details of the dropdowns clearly from 2000 to 2009. But if you scroll over 2010 through 2013, you aren't able to see the details because the drop down is on the right side and you can't scroll over for some reason. How can I fix this to where the drop downs display on the left side instead of the right?