I got issue that jquery object is null and i am unable to call function ..Plz check the below code and Can anybody help to to solve the Problem

I got issue that jquery object is null and i am unable to call function ..Plz check the below code and Can anybody help to to solve the Problem



<html>
<head>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/jquery.min.js"></script>
<!--<script type="text/javascript" src="js/sPlusRatings.js"></script>  -->

<link href="sPlusMenu.css" rel="stylesheet" type="text/css" />

<script type="text/javascript">
$(document).ready(function() {
$(".CheckBoxGraphClass").change(function(){         
     if($(this).is(":checked")){                             
            $(this).next("label").addClass("LabelSelected");            
        }else{           
            $(this).next("label").removeClass("LabelSelected");
        }
    }); 
}); 
function getDisplay()
{
    var val='<div><input id="availableShows11" name="availableShows" type="checkbox" class="CheckBoxGraphClass" value="30 Rock" /><label id="Label11" for="availableShows11" class="CheckBoxLabelClass" onclick=getFun("availableShows11")>30 Rock</label></div><div><input id="availableShows12" name="availableShows" type="checkbox" class="CheckBoxGraphClass" value="Apprentice 10" /><label id="Label12" for="availableShows12" class="CheckBoxLabelClass" onclick=getFun("availableShows12")>Apprentice 10 </label></div>';
       $('#displayDiv').html(val);

}

</script>

</head>
<body onload="getDisplay()">

<form id="sheduleFilter" name="sheduleFilter" method="post" >

<div id="displayDiv">
 
</div>

</form>

</body>



</html>