Image with Form Authentication

[jerry_hokh]

hi all,
It's would be appreciated if any one can help me.

I have a Login page with a logo picture.In web.config i wrote this:

<authentication mode="Forms">
<forms loginUrl="Security/Login.aspx" protection="None">
<!--<credentials passwordFormat = "SHA1">
</credentials>-->

</forms>

</authentication>

But the image can not show before i have logged in...meaning, when i first start my project , the image doesnt show.But when have logged in and click on BACK buttom on the menu bar , the picture showed.....

Please show me the way of showing pix before logging in.

Thank alot inadvance.

Jerry.