I estensively use tables for positionning my control on the page (although I know the tables were not made for that). The default measurement of the controls in in percentage. I found ou that when I use Doctype, the table are rendered weird. Scroll bars appears without any need.
So decided to work without doctype.
Recentlty I was working with ModalPopupExtender and the result was worse. I use the css attached in the snippet as the background css class. The control works well but the background is really ugly. I put back doctype and things works perfeclty as the Modal popup is concerned.
Can any one help me solve this without using DocType?