function writeEmailAddress() {
  document.write("m");
  document.write("a");
  document.write("t");
  document.write("s");
  document.write("u");
  document.write(".");
  document.write("n");
  document.write("o");
  document.write(".");
  document.write("p");
  document.write("a");
  document.write("g");
  document.write("e");
  document.write("@");
  document.write("gmail");
  document.write(".com");
}