{ coded = "YlWf@ZIlZI-Y.Tf.J6"
key = "z7FqjX1m8sfKutaSlP3kAxJDei2ZWyGCUr05wNvpdcIYhLORQMEB9bo4g6HTnV"
shift=coded.length
link=""
for (i=0; i<coded.length; i++) {
if (key.indexOf(coded.charAt(i))==-1) {
ltr = coded.charAt(i)
link += (ltr)
}
else {     
ltr = (key.indexOf(coded.charAt(i))-shift+key.length) % key.length
link += (key.charAt(ltr))
}
}
document.write("<a href='mailto:"+link+"'>お問い合わせ</a>")
}