Creating a good internal linking strategy to pass pagerank from one page to another is an important part of SEO. Unless you have a good understanding of some basic technical concepts, it sometimes may be hard for you to figure out if your internal links are capable of passing pagerank. For example, you might have a fancy drop down menu of links that don’t appear until you mouse over the menu. How can you tell if the bots are crawling it?
One simple method is to sign your site up for Google Webmaster Tools and check out the Internal Links report. If the menu is passing page rank you should see the page show up in the report as page that is generating an internal link to the pages for the items listed on the menu. Thanks Google.