PNG image transparent CSS code for IE6

#primary ul.links li.menu-495 a{     
            width:86px;     
            left:363px;     
            background:transparent;         
            filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=crop  src='/sites/all/themes/adaptive/images/main_nav-contact.png');  }