I'm fairly new to html so bare with me...
I have several restaurant websites, adapted from a template. I'll use this one as an example: http://feastaway.com/basic/
You'll see there is a navigation bar, with links to 'Welcome', 'Contact Us', 'Opening Times' and 'View Menu'. The first three are internal links to that section of the page and work like a dream. The fourth one, 'View Menu', is an external link which is supposed to open up a new tab, but when you click it all that happens is it becomes highlighted. It doesn't open the new tab or indeed the link in the existing tab