function decode(aid) {
	var text = document.getElementById(aid).href
	if (! text.match(/#/)) {
		return;
	}

	text = text.replace(/^[^#]*#/, '')

	var encoded = 'RNVW.K-=EPC_FQIOTXMADZLGSJUBYH'
	var decoded = 'abcdefghijklmnopqrstuvwxyz._-@'

	var res = ''
	for (var i = 0; i < text.length; i++) {
		var idx = encoded.indexOf(text.charAt(i))
		res += (idx == -1) ? text.charAt(i) : decoded.charAt(idx)
	}

	document.getElementById(aid).href = res
}