function removeVieMarks(str) {
  var result = str.toString(16);

  result = result.replace(/\u0110/g, 'D');
  result = result.replace(/\u0111/g, 'd');
  result = result.replace(/(\u00c0|\u00c1|\u00c2|\u00c3|\u0102|\u1ea0|\u1ea2|\u1ea4|\u1ea6|\u1ea8|\u1eaa|\u1eac|\u1eae|\u1eb0|\u1eb2|\u1eb4|\u1eb6)/g, 'A');
  result = result.replace(/(\u00e0|\u00e1|\u00e2|\u00e3|\u0103|\u1ea1|\u1ea3|\u1ea5|\u1ea7|\u1ea9|\u1eab|\u1ead|\u1eaf|\u1eb1|\u1eb3|\u1eb5|\u1eb7)/g, 'a');
  result = result.replace(/(\u00c8|\u00c9|\u00ca|\u1eb8|\u1eba|\u1ebc|\u1ebe|\u1ec0|\u1ec2|\u1ec4|\u1ec6)/g, 'E');
  result = result.replace(/(\u00e8|\u00e9|\u00ea|\u1eb9|\u1ebb|\u1ebd|\u1ebf|\u1ec1|\u1ec3|\u1ec5|\u1ec7)/g, 'e');
  result = result.replace(/(\u00cc|\u00cd|\u0128|\u1ec8|\u1eca)/g, 'I');
  result = result.replace(/(\u00ec|\u00ed|\u0129|\u1ec9|\u1ecb)/g, 'i');
  result = result.replace(/(\u00d2|\u00d3|\u00d4|\u00d5|\u01a0|\u1ecc|\u1ece|\u1ed0|\u1ed2|\u1ed4|\u1ed6|\u1ed8|\u1eda|\u1edc|\u1ede|\u1ee0|\u1ee2)/g, 'O');
  result = result.replace(/(\u00f2|\u00f3|\u00f4|\u00f5|\u01a1|\u1ecd|\u1ecf|\u1ed1|\u1ed3|\u1ed5|\u1ed7|\u1ed9|\u1edb|\u1edd|\u1edf|\u1ee1|\u1ee3)/g, 'o');
  result = result.replace(/(\u00d9|\u00da|\u0168|\u01af|\u1ee4|\u1ee6|\u1ee8|\u1eea|\u1eec|\u1eee|\u1ef0)/g, 'U');
  result = result.replace(/(\u00f9|\u00fa|\u0169|\u01b0|\u1ee5|\u1ee7|\u1ee9|\u1eeb|\u1eed|\u1eef|\u1ef1)/g, 'u');
  result = result.replace(/(\u00dd|\u1ef2|\u1ef4|\u1ef6|\u1ef8)/g, 'Y');
  result = result.replace(/(\u00fd|\u1ef3|\u1ef5|\u1ef7|\u1ef9)/g, 'y');

  return result;
}