$(document).ready(function(){

        $('body').on('click', '#start_timer', function() {

            var laydate = $(".layui-laydate");

            laydate.hide();

            if(laydate && laydate.length>){

                laydate.show();

                var top = $(".layui-layer")[].offsetTop;

                var left = $(".layui-layer")[].offsetLeft;

                var top1 = top + ;

                var left1 = left +  ;

                $(".layui-laydate").css("top",top1);

                $(".layui-laydate").css("left",left1);

            }

        })

        $('body').on('click', '#end_timer', function() {

            var laydate = $(".layui-laydate");

            laydate.hide();

            if(laydate && laydate.length>){

                laydate.show();

                var top = $(".layui-layer")[].offsetTop;

                var left = $(".layui-layer")[].offsetLeft;

                var top1 = top + ;

                var left1 = left +  ;

                $(".layui-laydate").css("top",top1);

                $(".layui-laydate").css("left",left1);

            }

        })

    });