Disabled button in IE and Firefox

 Hello,
I have two buttons with ForeColor and BackColor and the only difference is that one button is disabled...
<asp:Button ID="Button1" Enabled="false" BackColor="white" ForeColor="blue" runat="server" Text="Button" />
<asp:Button ID="Button2" BackColor="white" ForeColor="blue" runat="server" Text="Button" />


in IE you can see the differnce between them but in Firefox they look the same,
so in that case the user will think that the disabled button is click able.
 
Thanks.

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