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<html>
<body>
<form runat="server">
<p>Select your favorite color:
<input id="r1" name="col" type="radio" runat="server">Red</input>
<input id="r2" name="col" type="radio" runat="server">Green</input>
<input id="r3" name="col" type="radio" runat="server">Blue</input>
<input type="button" value="Submit" OnServerClick="submit" runat="server"/>
<p id="p1" runat="server" />
</form>
</body>
</html>