var ua = navigator.userAgent;
if(navigator.userAgent.indexOf("MSIE 6") != -1) {
  var ie6 = true;
}
jQuery(function(){
  if(ie6 && IEPNGFIX) {
    jQuery('.PNG').each(function() {
      var classes = this.getAttribute('className');
      if(classes.indexOf("RO") != -1) {
        var imgout = this.getAttribute('src');
        var imgovr = imgout.replace('a.', 'b.');
        IEPNGFIX.hover(this, imgovr);
      } else {
        IEPNGFIX.fix(this);
      }
    });
  }
});