function dateExt( val ) { 

  var ext = ( Math.ceil( (val - 1)/10 ) == (val - 1)/10 && val != 11 ) ? 'st' : 'th'; 

  if ( ext == 'th' ) var ext = ( Math.ceil( (val - 2)/10 ) == (val - 2)/10 && val != 12 ) ? 'nd' : 'th'; 

  if ( ext == 'th' ) var ext = ( Math.ceil( (val - 3)/10 ) == (val - 3)/10 && val != 13 ) ? 'rd' : 'th'; 

  return ext; 

}