Hello I am developing an intranet website for a client that has IE6 as standard. I have encountered a minor, but annoying issue with IE6 alignment (I believe it is an alignment issue) with Ajax TabContainer As you can see, there is a slight pixelation present in the main tab, but not in the subtab. This is because the subtab resides inside an IFrame. The difference between the two controls are that the main one is dynamically constructed with ASP.NET controls, and the other one is declared HTML. The two frames also differ in that the smaller one does not use a master page. Does anyone have an idea of what might be the cause of this? The appearance is as expected in FF and later versions of IE.