[jQuery] How to break out of jQuery function?

[MiD-AwE]

Hi all,

I have a function that will run everytime a link in my menu is
clicked. The problem is that one of the links point to an https and
appropriately opens in a new window/tab. I want to break out of the
function so that my page does not go blank as a result.

I tried the .end(); function but it doesn't seem to do what I expected
as my page goes blank and the https is opened in two other windows/
tabs.

below is my exception as it stands:[not complete code - only for
illustration]

 var href="";

if (href == ""){
   $.end(); <- here is where I need to break out.
  } else {
   $('#content').html($(href).html());
 };