Please forgive me if this has been asked and answered before.

I am creating TabContainer children programmatically in my application.   Consistently, in IE7 and FireFox 2 and 3, the first tab child which is created, the tab image renders incorrectly, with the content directly behind the tab itself in the z-axis.

Example rendering of the first tab over the content:
http://alpha.jenkinsmd.com/images/alpha_jenkinsmd_com/12/r_dojo-image1.p...

As soon as a second tab control is added, the rendering is correct: