jquery uploadify 在FF下无效的解决办法

js代码

$('#file_upload').uploadify({ 
buttonimage: '${ctx }/commons/uploaddify/img/browse-btn.png', 
swf :'${ctx }/commons/uploaddify/uploadify.swf', 
uploader :'../servlet/defaultdispatcher;jsessionid=${pagecontext.session.id}?__action=xxx', 
filetypeexts: '*.jpg;*.png;*.gif;*.bmp', 
filetypedesc: '图像文件', 
formdata: { 
timestamp: new date().gettime() 
}, 
onselect: function(file){ 
//重写校验 
}, 
onuploadprogress: function(file,bytesuploaded,bytestotal,totalbytesuploaded,totalbytestotal){ 
$('#pregress').html('总共需要上传'+bytestotal+'字节，'+'已上传'+totalbytestotal+'字节'); 
}, 
onuploadsuccess: function(file){ 
//上传成功 
} 
}); 

参考网上解决方案,在uploader路径后面增加jsessionid就好。