css file

css file

Hi,
 
i want to copy the souce code from these links below and call them directly from my application.  I was able to find the js files but not able to find the css file.  i've done some google and they talked about themes? i dont know anything about this.  The code below worked fine but again, i want to find the souce code but can't find the css.  can one pls help?
 
<link rel="stylesheet" href=" http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.2/themes/start/jquery-ui.css" type="text/css" media="all" />
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
    <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.2/jquery-ui.min.js" type="text/javascript"></script>
    <script type="text/javascript">   
        $(document).ready(function () {
            $('#txtDateFrom,#txtDateTo').datepicker({
                changeYear: true,
                beforeShow: function (textbox, instance) {   
                instance.dpDiv.css({
                    marginTop: (-textbox.offsetHeight) + 'px',
                    marginLeft: textbox.offsetWidth + 'px'
                });
                }
            });
        });
    </script>
    </head>
    <body>
         <form id="testForm" runat="server">
        <div>
            <input type="text" id="txtDateFrom" /><br />
            <input type="text" id="txtDateTo" />
        </div>
     </form>






















 
thanks