In the main navigation, where do you have an option to force the custom links to open in a new tab. If you click the navigation link for "Product Videos" it goes to the Youtube page but takes you right off the site to youtube in the same windows. I want a new tab to open for each of these instances where I may use them. Most themes have a simple check box somewhere that forces this. 

I've added the target="_blank"  instruction in the custom link and it does not work.