function getChange(s) {
        var reqUrl ="D:\test.xml";
        if (s.value == 1) {
            $.ajax({
                url:reqUrl,
                type: 'GET',
                dataType: 'xml',
                timeout: 9000,
                error: function(xml){
                    alert('Error loading XML document'+xml);
                },
                success: function(xml){
                    $(xml).find("tr").each(function(i){
                        var uid=$(this).children("td[colnum='c0']").text();
                        alert("uid");
                    });
                }
            });
        }
    }