Dialog position issue

Dialog position issue

Hello all,

I'm working with the Dialog widget in  jQuery UI 1.7.2. I'm having trouble positioning the dialog for the first time in any version of Internet Explorer. I have the position attribute set to 'center'. The first time I open the dialog (height set to '' and width is 472 for IE), it opens at the bottom of the browser which ultimately adds height to the window. If you close the dialog and then open it again, it positions correctly. 

Any help is appreciated.

Thanks,

Preston