JS的load事件无效，该怎么处理呢

JS的load事件无效，该怎么办呢？

JScript code

$('.mail_button').click(function(){    $(this).overlay    ({        effect: 'fade',        opacity: 0.8,        closeOnClick: true,        onShow: function()         {            $(this).append($closebar);                    $('#container').append($editiplay);            alert('test');                try{$('#editiplay').load("../php/rootmail.php", function(){$('#editiplay').corner();});}                catch (err){alert(err.description);}        },        onHide: function()        {            $editiplay.remove();        }    })    });