Resize Filter Screen Dynamically

My users want to be able to filter a seach list on a large number fo fields (too many for it to be practical to show all of them on a filter screen) and so I would like to have a basic filter screen in which they choose which field they want to filter on from a drop down and then enter a value in the box next to it. SQL in the stored proc behind the SL will then apply the filter appropriatetly. I want to have “add a filter” buttons at the end of each row, which dynamically resizes the filter box and shows the next dropdown / text box combo. I have tries resizing the EnquiryForm on the filter screen but it does not seem to do anything. Any ideas?

You can change the size of the Filter Form with code as belowthis.EnquiryForm.Parent.Height *= 2; This will double the size of the Filter Form.I put this code on the click event of a button on my filter form.