Round to the Nearest Odd Integer

:)

HTML

<script src="http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js"></script>
<input id='inp' type='text' placeholder='Enter a number to round to the nearest odd integer.' size='50'/><button id='btn' >Submit</button>

JavaScript

var inp = document.getElementById('inp');
var btn = document.getElementById('btn');
btn.onclick = function(e){
    var n = inp.value;
    var noe = 2* Math.r(n/2) + 1;
    console.log( noe );
};