I have a popup that appears when clicking on the login link on this page

You will see when you click the link, the background fades, the scroll bars are lost and a popup is displayed. It works fine but i don't quite like the fact that i have had to remove the scroll bars. This was because when the use scrolled down the page the background was not faded like the top of the page.

There is a bug in IE7 as the scroll bars still appear.

So i was hoping that there would be either a css fix or jQuery fix for this? If i keep the scroll bars, when the user scrolls down the page when the popup is displaying i need the whole page to remain faded?

Is this possible anyone?

Many thanks,