How to Avoid Form Authentication in Individual Pages?

Hi...
 
 I ve Created Form Authentication Login for my Site.... Now Authentication is working good.. It not allowing other Pages to Load without authentication.
The Prblem is..
If i Signout the Authentication .. I made it to redirect to LoginPage.aspx such as,,









































FormsAuthentication.SignOut();
Response.Redirect(LoginPage.aspx);
 
 Now the Page LoginPage.aspx 's Design are getting removed... I ve used Themes for my Project.. wat could be the Problm.. for Not being in the original design..

 And another doubt wat i ve is... How cou ...