jQuery dialog not opening in jsFiddle

jQuery dialog not opening in jsFiddle

Why jQuery dialog is not opening in jsFiddle?
<div id="rolling" style="display: none;">
//data
</div>
<div style="padding-top:15px;">
<button type="submit" id="Send to device"
onclick="javascript:initializeDevice()"> Send to device</button>
</div>
function initializeDevice()
{
document.getElementById('rolling').style.display = 'block';
jQuery("#rolling").dialog({
//title etc.
});
jQuery("#rolling").dialog('open');
}
check this link: http://jsfiddle.net/sumanthreddy/bps6e/2/