function blinkExecute(target,color){
  document.getElementById(target).style.backgroundColor = color;
}

function blinkBlink (target){
  color1 = "#feff6f"; // blinking color
  color2 = "#ffffff"; // background color

  setTimeout('blinkExecute("'+target+'","'+color1+'")',0);
  setTimeout('blinkExecute("'+target+'","'+color2+'")',500);
  setTimeout('blinkExecute("'+target+'","'+color1+'")',1000);
  setTimeout('blinkExecute("'+target+'","'+color2+'")',1500);             
  setTimeout('blinkExecute("'+target+'","'+color1+'")',2000);
  setTimeout('blinkExecute("'+target+'","'+color2+'")',2500);     
  setTimeout('blinkExecute("'+target+'","'+color1+'")',3000);
  setTimeout('blinkExecute("'+target+'","'+color2+'")',3500);     
  setTimeout('blinkExecute("'+target+'","'+color1+'")',4000);
  setTimeout('blinkExecute("'+target+'","'+color2+'")',4500);             
  document.getElementById(target).focus();
}