The common technique to force links to open a new window or tab is to add a target attribute like so:

<a href="" target="_blank">check it out</a>

This works just fine but is not actually valid markup. Fortunately, we can use jQuery to add the target attribute so it doesn’t muck up the HTML.

$(document).ready(function() {

Change that invalid link to look like this instead:

<a href="" rel="external">check it out</a>

Now the link forces browsers to open a new window/tab and the markup is still valid. Easy cheesy.