jQuery Select first and second td
Solution 1:
$(".location table tbody tr td:first-child").addClass("black");
$(".location table tbody tr td:nth-child(2)").addClass("black");
http://jsfiddle.net/68wbx/1/
Solution 2:
To select the first and the second cell in each row, you could do this:
$(".location table tbody tr").each(function() {
$(this).children('td').slice(0, 2).addClass("black");
});