You can use
RoundedCorners
of
Ajax Control toolkit
. quite easy to
implement
and
compatible
to all browsers
For using
ajax
you have to add
reference
of
AjaxControllToolkit.dll
.
Example:
<div id="divround" runat="server" style="width:500px">Your design here</div>
<ajaxToolkit:RoundedCornersExtender ID="rce" runat="server"
TargetControlID="divround"
Radius="6"
Corners="All" />
Make it answer if it suits to your requirement.
Thanks