ASP.NET Controls That Take Advantage of the DHTML Object Model – the initiatives

What I want: ASP.NET Web control that takes the advantage of DHTML Object Model.
The rendering should be browser independent. For IE3 and above, it should exploit DHTML with client side scripting, otherwise may require server side scripting. Dino Esposito has an article on this.
Be more specific I want to create two web controls:
1) Expandable DIV. Expand/Collapse that response to Onclick event.
2) Drag-able Table row. Response to onmousedown and onmouseup, enabling a quick table re-ordering. Dave Massy has an article on this.
Other User requirement support VS.NET HTML designer Drag and Drop;