if (document.all && /MSIE (5\.5|6)/.test(navigator.userAgent) &&
  document.styleSheets && document.styleSheets[0] && document.styleSheets[0].addRule)
 {
 	document.styleSheets[0].addRule('img', 'behavior: url(/images/iepngfix/iepngfix.php)');
   	document.styleSheets[0].addRule('div', 'behavior: url(/images/iepngfix/iepngfix.php)');
   	document.styleSheets[0].addRule('input', 'behavior: url(/images/iepngfix/iepngfix.php)');
	document.styleSheets[0].addRule('ul', 'behavior: url(/images/iepngfix/iepngfix.php)');
 }