.top_main
{
background-image:url(images/backtop.gif);
margin-left:-7px;
}

.pngLink
 {
 text-align:left;
 background-image:url('images/ncmn_06.png');

 }

 .pngLink1
 {
 display:block;
 width:112px;
  height:90px;
 filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/ncmn_06.png', sizingMethod='scale');

}