function CreateLayer(id, x, y, text) {
  
    var str="<div id=" + id + " style=\"position:absolute;top:" + x + ";left:" + y + ";visibility:hidden;\">" + text + "</div>";

}

function layer_show(id) {
  
      document.all.item(id).style.visibility = "visible";
      document.all.item(id).style.zIndex = 1;
}

function layer_hide(id) {
      document.all.item(id).style.visibility = "hidden";
}