function spam(arg) {
  document.write(arg);
  document.write("@cse.iitb.ac.in");
}

function email(login, domain, subject, body, anchor) {
  document.write("<a href=\"mailto:");
  document.write(login);
  document.write("@");
  document.write(domain);
  document.write("?subject=");
  document.write(subject);
  document.write("&body=");
  document.write(body);
  document.write("\">");
  document.write(anchor);
  document.write("</a>");
}