$.ajax is showing readystate 0 and status 0

$("#moviesearch").keyup(function(){    
        var m_name = $(this).val();
        alert(m_name);
        if(jQuery.trim(m_name).length < 1){
            $("#searchresult").css("display", "none");
            return false;
        }
        else{
            $.ajax({
                url: "",
                data: { "m_name_key": m_name },
                type: "POST",
                dataType: "JSON",
                success: function(msg){
                    $("#searchresult").css("display", "block");
                    $("#searchresult").html(msg);
                },
                error:function(jq,stat,exe){
                    //$("#searchresult").html();
                    alert(jq.readyState);
                    alert(jq.status);
                }
            });
        }
    });

<div class="left_menu_search_contain_search">
                    <input type="text" name="search" id="moviesearch" placeholder="Search here. For example : Movie Name" />
                    <button type="submit">GO</button>
                    <div id="searchresult">
                        
                    </div>
		</div>