var ua = navigator.userAgent;
if(ua.indexOf("MSIE") != -1 && ua.indexOf("6.0") != -1) {
  var ie6 = true;
}
$(function(){
  if(ie6 && IEPNGFIX) {
    $('.PNG').each(function() {
      var classes = this.getAttribute('className');
      if(classes.indexOf("RO") != -1) {
        var imgout = this.getAttribute('src');
        var imgovr = imgout.replace('_off.', '_on.');
        IEPNGFIX.hover(this, imgovr);
      } else {
        IEPNGFIX.fix(this);
      }
    });
  }
});