function hideSelects() {
  if (navigator.appName.indexOf("MSIE")) {
    for (var S = 0; S < document.forms.length; S++){
      for (var R = 0; R < document.forms[S].length; R++) {
        if (document.forms[S].elements[R].options) {
          document.forms[S].elements[R].style.visibility = 'hidden';
        }
      }
    } 
  }
}

function showSelects() {
  if (navigator.appName.indexOf("MSIE")) {
    for (var S = 0; S < document.forms.length; S++){
      for (var R = 0; R < document.forms[S].length; R++) {
        if (document.forms[S].elements[R].options) {
          document.forms[S].elements[R].style.visibility = 'visible';
        }
      }
    } 
  }
}