Prepending to an existing onclick

Prepending to an existing onclick

I have a link with an onclick on it

            <a href="/home" onclick="old_foo()">Home</a>

I want the original onclick to fire "old_foo()" in addition to a new function "new_foo()"

Doesn't work, only fires new_foo() when the link is clicked
      $(this).click(function() {
            new_foo();
      });

Doesn't work


      $(this).click(function() {
            $(this).attr('onclick');
            new_foo();
      });

What am I doing wrong?