Drop down menus, and custom sitemaps, are tools used in static websites, to help the readers find website content. Occasionally, in Blogger Help Forum: Learn More About Blogger , we see a question from blog owners, who are accustomed to publishing static websites. How do I upload a custom sitemap, for my readers to use? or How do I build a drop down, cascaded menu bar, to index the posts? The answer, for Blogger blogs, is that neither is truly useful. Features like cascaded, drop down menus, custom sitemaps, numbered pages, and complex slideshows ("sliders"), are excellent accessories, for static websites. Blogger blogs, however, are dynamic - and don't really benefit from either accessory.
What Blogger won't tell you