Need Scroll Bar for Drop Down List populated by ng-options

     

I have this code which populates the drop dopwn menu:


echo "
";  echo "";  echo "";  echo "
";  

(image)


I want to be able to only show maybe 8 options then be able to scroll down to see the rest. How do I go about doing this? When I adjust the height it just adjusts the height of the actual field instead of the drop down size.


This is not what I want:


(image)


TURNS OUT IF THE LIST IS LONG ENOUGH IT WILL AUTOMATICALLY ADD A SCROLL BAR. THIS IS NOT ORIGINALLY WHAT I WANTED. IT WOULD BE EASIER IF THERE WERE 8 SHOWS SHOWN TO START WITH AND BE ABLE TO SCROLL THROUGH THE REST.