function imageEvent(imageId, event) {
  event = event.toString().toLowerCase();
  switch (event) {
    case "out":   break;
    case "over":  break;
    case "click": break;
    default:  event = "out";
  }
  
  if (document.all) {
    image = eval("document.all."+imageId);
    image.src = eval(imageId +"_"+event+".src");
  } else {
    var ihatenetscapetoo = document.getElementById(imageId);
    ihatenetscapetoo.src = eval(imageId +"_"+event+".src");
	}
}

function changeBackground(imageId, event) {
  event = event.toString().toLowerCase();
  switch (event) {
    case "out":   break;
    case "over":  break;
    case "click": break;
    default:  event = "out";
  }
  
  if (document.all) {
    image = eval("document.all."+imageId);
    image.background = eval("b_background_"+event+".src");
  } else {
    var ihatenetscapetoo = document.getElementById(imageId);
    ihatenetscapetoo.src = eval("b_background_"+event+".src");
	}
}