I am developing a form module that has a link on it to open an address book in a popup window.  When the popup is closed, I don't want the original page to refresh as the user may have unsaved data on it.  I set refresh to false.  When the popup closes, the scroll bar for the original page disappears making the lower part of the form not accessible.  Is there a way not to refresh the page and keep the scroll bar?

Here is how I call the popup:

mylink.NavigateUrl = UrlUtils.PopUpUrl(this.EditUrl("AddressBookEdit"), this, PortalSettings, false, false, 500, 900, false, Globals.NavigateURL());

Thanks