b='5';
function blink() {
if (b=='rgb(255,255,255)') b='rgb(197,0,9)'; else b='rgb(255,255,255)';
  if (document.getElementById("p1")) document.getElementById("p1").style.color=b;
  if (document.getElementById("p2")) document.getElementById("p2").style.color=b;
   window.setTimeout('blink()',1000);  
}