Always have Modal Dialog on screen

Always have Modal Dialog on screen


I love the modal dialog by the way, very slick and cool. But, if the
page is scrollable then the dialog won't stay on the screen when the
user scrolls. How can I make a modal dialog stay on screen even if the
user scrolls. I have tried this but it doesn't work
.alwaysOnScreen {
position: fixed;
}
And then I make the dialogClass in the options set to alwaysOnScreen.
How can I do this? Please help! Thanks so much...