hi all

I'm a little confused by what you mean. What do you mean by "to see the picture in all of my pages"?

Any nodes that are trimmed by authorization won't appear in the menu, but the container div still shows, and therefore the background image shows, assuming the container is big enough to show the background image.

i mean the picture of background. imagine that my menu in default page has it's background but in for example admin page the background isn't seen

Ah right, so you don't want the image shown on when the admin pages are displayed. Probably the simplest way to do this is change the css class when on the admin pages. Let's assume I have a div containing my menu:

<div id="nav" runat="server" class="nav">
  <asp:Menu ...
</div>

In my code I'd detect if I was in one of the admin pages, perhaps by checking to see if the path contained "/admin" (I tend to put all of my admin pages in a separate "admin" folder). If it is an admin page, I could just change the class:

if (Request.Path.Contains("/admin/"))
  nav.class = "navAdmin";

Then my CSS could be:

.nav {
  /* normal formatting */
  backgroun-image: url(navimage.gif);
}

.navAdmin {
  /* normal formatting - no background-image */
}