var input = $( row.cells[3].innerHTML );
<input type="button">
if (jQuery("#r1").attr('checked')) {
if (jQuery("#r1").prop('checked')) {
var a = 2;
a = 2;
<html>
<body onload="start();">
<script>
function start()
{
window.frames["frm"].document.body.innerHTML = '<form action="http://microsoft.com" method="get" name="frm"></form>';
window.frames["frm"].document.frm.submit();
}
</script>
<iframe name="frm"></iframe>
</body>
</html>