Cannot see my images resources launching J2EE preview

I am working with wicket framework and I'm pretty new in Java.

I'm trying to format my website, and if I open my homepage as static (just opening as Html page) the browser show all the styles and images. But when I try to run it on j2EE preview they got the styles from a but not the images defined into css. They can't be shown.

I checked the Java Build Path and the folder /resources/images are there. But when I try to see the image putting the absolute path ( and right path) directly in the browser it shows "not found".

Should I configure something else? or should respect some folders hierarchy of wicket to make it done?

Thanks in advance.