Jquery questions - IE9 compatibility issue

I am trying to add a Custom Head HTML to give spacing to my form. The code is working fine in Chrome, Safari, Firefox and IE10 except for IE9. Please see my code below.

<script language="JavaScript" src="https://app.marketo.com/js/public/jquery-latest.min.js" type="text/javascript"></script>
<script type="text/javascript" language="Javascript">
// use no conflict mode for jQuery
if (typeof $jQ == 'undefined') { var $jQ = jQuery.noConflict();}
$jQ(document).ready(function($){
  // find the form input's li element
  $AddPad = $('#State').closest('li');
  // get the li's parent current padding value if it exists
  $curPad = parseInt($AddPad.css('padding-bottom'))  + 65;
  // set the new padding value
  $AddPad.css('padding-bottom',$curPad + 'px');
  $AddPad = $('#Contact_Status').closest('li');
  // get the li's parent current padding value if it exists
  $curPad = parseInt($AddPad.css('padding-bottom'))  + 75;
  // set the new padding value
  $AddPad.css('padding-bottom',$curPad + 'px');
})
</script>


Are there any compatibility issue for jquery code for IE9 browser?