function undoFocus(e, s) { 
  if (e.value == '') e.value = s;
  if (e.value == s) e.style.color = "#aaa"; 
  e.style.background="#fff";
}
function doFocus(e, s) { 
  if (e.value == s) e.value = "";
  e.style.color = "#000";
  e.style.backgroundColor = "#ffa"; 
}