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rot13.html
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rot13.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>rot13</title>
<style type="text/css">
body {
background-color: white;
font-family: Sans-Serif;
text-align: center;
}
h1 {
margin-bottom: 0.1em;
}
h2 {
font-size: 1em;
font-weight: normal;
margin: 0 auto 5em auto;
}
.arrow {
font-size: 2.0em;
font-weight: bold;
margin: 0;
}
.warning {
background-color: orange;
padding: 0.4em 0.75em;
}
</style>
<!-- rot13 implementation from http://stackoverflow.com/a/617685/987044 -->
<script type="text/javascript">
function rot(s, i) {
return s.replace(/[a-zA-Z]/g, function (c) {
return String.fromCharCode((c <= 'Z' ? 90 : 122) >= (c = c.charCodeAt(0) + i) ? c : c - 26);
});
}
function update() {
document.getElementById('output').value = rot(document.getElementById('input').value, +document.getElementById('rot').value);
}
</script>
</head>
<body>
<h1>rot13.com</h1>
<h2><a href="https://en.wikipedia.org/wiki/ROT13">About ROT13</a></h2>
<noscript><p><span class="warning"><em>Please enable JavaScript to use this page.</em></span></p></noscript>
<p><textarea id="input" cols="80" rows="12" onkeyup="update()" onchange="update()" autofocus></textarea></p>
<p class="arrow">↓</p>
<p><select id="rot" onchange="update()">
<option value="1">ROT1</option>
<option value="2">ROT2</option>
<option value="3">ROT3</option>
<option value="4">ROT4</option>
<option value="5">ROT5</option>
<option value="6">ROT6</option>
<option value="7">ROT7</option>
<option value="8">ROT8</option>
<option value="9">ROT9</option>
<option value="10">ROT10</option>
<option value="11">ROT11</option>
<option value="12">ROT12</option>
<option value="13" selected>ROT13</option>
<option value="14">ROT14</option>
<option value="15">ROT15</option>
<option value="16">ROT16</option>
<option value="17">ROT17</option>
<option value="18">ROT18</option>
<option value="19">ROT19</option>
<option value="20">ROT20</option>
<option value="21">ROT21</option>
<option value="22">ROT22</option>
<option value="23">ROT23</option>
<option value="24">ROT24</option>
<option value="25">ROT25</option>
</select></p>
<p class="arrow">↓</p>
<p><textarea id="output" cols="80" rows="12" readonly></textarea></p>
</body>
</html>