jQuery to Validate File Upload Extension in File Upload Control

<script src="http://code.jquery.com/jquery-1.8.2.js"></script>

<script type="text/javascript">

$(function() {

$('#<%=fileupload1.ClientID %>').change(function() {

var fileExtension = ['jpeg', 'jpg', 'png', 'gif', 'bmp'];

if ($.inArray($(this).val().split('.').pop().toLowerCase(), fileExtension) == -1) {

alert("Only '.jpeg','.jpg', '.png', '.gif', '.bmp' formats are allowed.");

}

})

})

</script>