The Blogger Navbar appears by default at the top of every Blogger-powered blog. Navbar features include:

  • Blogging Today : takes you back to www.blogger.com.
  • Search Blog: searches the blog you're viewing. Results will appear directly on the page.
  • Flag Blog: lets you mark the current blog as objectionable.
  • NextBlog: takes you to a random, recently-updated Blogger blog.
  • [email address]: If you are logged in to your account, you'll see your own address here. Other viewers will see their own email addresses, or none at all if they aren't logged in.
  • Dashboard: If you are logged in, you'll have a link to your own dashboard.
  • Sign In/Out: This displays the appropriate option, depending on whether you're logged in or not.

The Navbar appears on all freely-hosted Blog*Spot blogs, but can be disabled for users publishing via FTP. It is available in several colors, and is configured in the Template tab in Blogger's interface. If you are using a classic template, you'll see a menu from which you can select a color. For blogs using Layouts, just click the "edit" link on the Navbar page element.
  • Unless you publish your blog via FTP, the Navbar cannot be disabled.
  • We've made every effort to make sure the Navbar doesn't interfere with custom template designs. However, some display problems may occur. Here are a few things to try if you are running into trouble:
  1. add style="margin-top:40px;" to the topmost element of your Template. (i.e. <table> would become <table style="margin-top:40px;">)

  2. make sure the closing </head> tag is present; it should go before the <body> tag.
Source : Help Blogger