flash form validation question

[aliashippysmom]

Hi! I am using cfform format="flash". Is there any way to do what is done in the following link? When my form is validated, I would like the "background", i.e. the rest of the page, to go dark and then the box with the error would appear. Click on the submit button "THis one is done in mxml" on the following link for an example of what I mean:

http://www.sitepoint.com/article/beginners-tutorial-flex-3/3

Thank you!