I really like the RoundCornerExtenderControl which is
part of the 4 new controls introduced in the ATLAS Control Toolkit. You can make
round corners of different controls and make them cooler by simply using the
RoundCornerExtenderControl. Check out the code below which make round corners
for two <td> cells.
<table>
<tr>
<td id="td1" style="background-color:Red" runat="server">
This is the first message
</td>
</tr>
<tr>
<td>
<table>
<tr>
<td id="td2" style="background-color:Yellow" runat="server">
This is the second message
</td>
</tr>
</table>
</td>
</tr>
<cc1:RoundedCornersExtender ID="rc1" runat="server">
<cc1:RoundedCornersProperties TargetControlID="td1" Radius="10" />
</cc1:RoundedCornersExtender>
<cc1:RoundedCornersExtender ID="rc2" runat="server">
<cc1:RoundedCornersProperties TargetControlID="td2"
Color="yellow" Radius="10" />
</cc1:RoundedCornersExtender>
</table>
You also need to register the ScriptManager control which can be accomplished
by using the following code:
<atlas:ScriptManager ID="sm1" runat="server" />
Check out the cool effect in the screen shot
below:

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