hex = 255;
function fadetext(Id)
{ 
  if(hex > 0) {
    hex -= 11; // increase color darkness
    document.getElementById(Id).style.color = 'rgb(' + hex + ',' + hex + ',' + hex + ')';
    setTimeout('fadetext("' + Id + '")',40); 
  } else {
    hex = 255; //reset hex value
    setTimeout('fadetext("' + Id + '")', 3000);
  }
}