How to display the my menus in the header section that is to the top of the home page?

Question

I want to display the my categories in the header section that is to the top of the home page.I already try the code in page.xml like this.But it doesn't work . Please help.

<block type="core/text_list" name="content" as="content" translate="label">
    <block type="core/text_list" name="top.menu" as="topMenu" translate="label">
        <label>Navigation Bar</label>
        <block type="page/html_topmenu" name="catalog.topnav" template="page/html/topmenu.phtml"/>
    </block>               
<label>Main Content Area</label>
</block>

Answer 1

Create local.xml or your custom.xml file , Use below code to display custom block on "topMenu"

<default>
    <reference name="header">
       <block type="core/text_list" name="top.menu" as="topMenu" translate="label">
           <block type="page/html_topmenu" name="catalog.mycustom" template="page/html/custommenu.phtml"/>
      </block> 
   </reference>
</default>