创建公共调用 jQuery Ajax 带返回值

<script type="text/javascript"> 
/* 请求Ajax 带返回值，并弹出提示框提醒 
--------------------------------------------------*/ 
function getAjax(url, parm, callBack) { 
$.ajax({ 
type: 'post', 
dataType: "text", 
url: url, 
data: parm, 
cache: false, 
async: false, 
success: function (msg) { 
callBack(msg); 
} 
}); 
} 
/*删除 
/*url: 表示请求路径 
--------------------------------------------------*/ 
function DeleteData(url, id) { 
var parm = 'active=Del&id=' + id; 
if (id == undefined || id == "") { 
showAlertMsg('请选择要删除一行'); 
} else { 
showConfirmMsg("此操作不可恢复，确定要删除吗？", function (r) { 
if (r) { 
getAjax(url, parm, function (rs) { 
if (parseInt(rs) > 0) { 
showOverAlertMsg("删除成功！", 2000, 4); 
} else if (parseInt(rs) == 0) { 
showOverAlertMsg("该数据被关联,无法删除！", 2000, 3); 
} 
else { 
showOverAlertMsg("删除失败！", 2000, 5); 
} 
}); 
} 
}); 
} 
} 
先看式如何调用 
//删除 
function DeleteOnclick() { 
DeleteData('SysMenu_List.aspx', Menu_Id); 
} 
</script>