CSS even/odd row selectors! Finally!

IE9 has been released, and it finally includes the "nth-child" pseudo-selector in CSS! In the past, this has been done on a server side, or with javascript. Now we finally have simple CSS rules for rows in tables that highlight every even or odd row, and it works in every browser without any hacks.

tr:nth-child(odd) {
  background-color: #def;
}
tr:nth-child(even) {
  background-color: #fff;
}