[ruslan_mart]

function getRandomInt(min, max) {
  return Math.floor(Math.random() * (max - min + 1)) + min;
}

function getRandomRUHash(max) {
  var i, result = '';
  
  for(i = 0; i < max; i++) {
  	result += String.fromCharCode(getRandomInt(1072, 1103));
  }
  
  return result.toUpperCase();
}


alert( getRandomRUHash(10) );