<script runat="server">
Sub submit(Source As Object, e As EventArgs)
button1.Style("background-color")="#0000ff"
button1.Style("color")="#ffffff"
button1.Style("width")="200px"
button1.Style("cursor")="pointer"
button1.Style("font-family")="verdana"
button1.Style("font-weight")="bold"
button1.Style("font-size")="14pt"
button1.Text="You clicked me!"
End Sub
</script>
<!DOCTYPE html>
<html>
<body>
<form runat="server">
<asp:Button id="button1" Text="Click me!" runat="server" OnClick="submit" />
</form>
</body>
</html>