function butover(object, styl) {
  if (navigator.appName == "Microsoft Internet Explorer") {
    object.setAttribute("className", styl);
  } else {
    object.setAttribute("class", styl);
  }
}

function butout(object, styl) {
  if (navigator.appName == "Microsoft Internet Explorer") {
    object.setAttribute("className", styl);
  } else {
    object.setAttribute("class", styl);  
  }
}