if ($logo = theme_get_setting('logo')) {
  $logo_css = "
<style type=\"text/css\"><!--
  .logofix {
    background-image: url('$logo');
    _background-image: none;
    _filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=crop, src='$logo');
  }
//--></style>
";
  drupal_set_html_head($logo_css);
}