Tutorial Help - Centered Pop-up window!?!?!


I just did the tutorial found at the following link:


However, I’m having a problem adjusting the width and height of the new window. The new window is centered and all of its attributes, such as scrollbars and resizable and so on do work, but height and width remain the same size even after altering the dimensions. It opens to a window about 700x500 each time. I followed the code exactly, so I’m pretty confused…any help would be greatly appreciated. Thanks!