coded = "iy5w1@qs5cisq.rx";cipher = "aZbYcXdWeVfUgThSiRjQkPlOmNnMoLpKqJrIsHtGuFvEwDxCyBzA1234567890";shift=coded.length;link="";for (i=0; i<coded.length; i++){if (cipher.indexOf(coded.charAt(i))==-1){ltr=coded.charAt(i);link+=(ltr);}else{ltr = (cipher.indexOf(coded.charAt(i))-shift+cipher.length) % cipher.length;link+=(cipher.charAt(ltr));}}document.write("<a href='mailto:"+link+"'>作者のメールアドレス</a>");