function getDocObj(elem,parent) {
      if (document.layers) {
            if (parent) {
                  return "document."+parent+".document."+elem;
            } else {
                  return "document."+elem;
            }
            
      } else if (document.all) {
            return "document.all."+ elem;
      } else if (document.getElementById) {
            return "document.getElementById('"+elem+"')";
      }
}


function getStyleObj(elem,parent) {
      if (document.layers) {
            if (parent) {
                  return "document."+parent+".document."+elem;
            } else {
                  return "document."+elem + ".style";
            }
      } else if (document.all) {
            return "document.all."+elem + ".style";
      } else if (document.getElementById) {
            return "document.getElementById('"+elem+"').style";
      }
}