function calling problem

[swapcode]

Hi,
i m trying to close web form by creating
function fclose()
{
window.close ;
}
and calling this function by
<asp:Button id="Button2" runat="server" Text="cancel" OnClick = "fclose()"></asp:Button>

but somehow its giving compilation error as
'fclose' is not a member of 'ASP.WebForm1_aspx'.
pls tell me how to solve this problem?