can't create s:button with image uses wizard

1.create seam project
2.open home.xhtml
3.choose jboss seam -> button in jboss tools palette
4.select "image" and push the button "..."
5.observe that you can't choose any image file ( e.g. as <h:graphicImage> )

also I saw next problem :
Image is located e.g. in : WebContent\img\img.png. Create <s:button image="/img/img.png"></s:button>. Vpe understand this path ("/img/img.png") and represent image. But web browser doesn't represent image (but if path is "img/img.png" tnan browser represent image )