#features li.first_li {
  background:none;
  filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/bg_feat_first_ie6.png', sizingMethod='crop');
}

#features li.about_li1 {
  background:none;
  filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/about_us/bg_feat_about1_ie6.png', sizingMethod='crop');
}