Drop Down List - How do I increase the viewable number form the default 11
I am trying to find a way to increase the number of viewable values for a drop down list. I know that you can include a scroll bar to view all the values, but I want to increase the number of values you first see when you click on the field. It looks like it is defaulted to 11. How can I make this 15, 20 or 30 values?