var behavior = 'behavior: url(' + hr_dir_current_skin + '/xtra/iepngfix.htc)';
if (document.all && /MSIE (5\.5|6)/.test(navigator.userAgent) &&
  document.styleSheets && document.styleSheets[0] && document.styleSheets[0].addRule)
 {
  // This one is too long to wait
  //document.styleSheets[0].addRule('*', behavior);
  // Feel free to add rules for specific elements only, as above.
  // You have to call this once for each selector, like so:
  document.styleSheets[0].addRule('div', behavior);
  document.styleSheets[0].addRule('img', behavior);
  document.styleSheets[0].addRule('a', behavior);
 }