Syntax Highlighting in Blogger

I've added some Javascript to the template of my blog to get Syntax Highlighting working. This means source code is formatted so it is easier to read. If it works allright, you should see an example of some highlighted php-code below. (The source code is not formatted/coloured when reading this post through an RSS-feed.)

<?php
/* Sample php code
This code doesn't do anything at all.
It just contains some php elements that should be formatted
and coloured.
*/

$some_variable = "some_string";

// Some comment
$result = some_function( $some_variable );

if (!$result)
{
  die("It doesn't work!");
}

$some_array = new array();

$some_array[0] = $result;
?>