function getStyleClass (className) {
  if (document.all) {
    for (var s = 0; s < document.styleSheets.length; s++)
      for (var r = 0; r < document.styleSheets[s].rules.length; r++)
        if (document.styleSheets[s].rules[r].selectorText == '.' + 
className)
          return document.styleSheets[s].rules[r];
  }
  else if (document.getElementById) {
    for (var s = 0; s < document.styleSheets.length; s++)
      for (var r = 0; r < document.styleSheets[s].cssRules.length; r++)
        if (document.styleSheets[s].cssRules[r].selectorText == '.' + 
className)
          return document.styleSheets[s].cssRules[r];
  }
  return null;
}