Everything working fine when i send data to authoriz.net it goes to payment page and then when i enter credit card number and expiry date it does redirect to my page but the url will be https://secure.authorize.net/gateway/transact.dll 

due to this my page's images and css are not being displayed properly

the url should be the url which i passed in x_relay_url but

it is that url on which i posted data ->>>>https://secure.authorize.net/gateway/transact.dll 

can anyone help me over this???