header('Content-type: text/css');  ob_start("compress");  function compress($buffer) {    /* remove comments */    $buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);    /* remove tabs, spaces, newlines, etc. */    $buffer = str_replace(array("\r\n", "\r", "\n", "\t", '  ', '    ', '    '), '', $buffer);    return $buffer;  }    /* your css files */  include('master.css');  include('typography.css');  include('grid.css');  include('print.css');  include('handheld.css');    ob_end_flush();