百度ueditor上传图片时设置默认宽高度

 function callback(){
                    try{
                        var link, json, loader,
                            body = (iframe.contentDocument || iframe.contentWindow.document).body,
                            result = body.innerText || body.textContent || '';
                        json = (new Function("return " + result))();
                        link = me.options.imageUrlPrefix + json.url;
                        if(json.state == 'SUCCESS' && json.url) {
                            loader = me.document.getElementById(loadingId);
                            loader.setAttribute('src', link);
                            loader.setAttribute('_src', link);
                            loader.setAttribute('title', json.title || '');
                            loader.setAttribute('alt', json.original || '');
                            loader.setAttribute('style','max-width:650px');//这里就是哥加入的代码
                            loader.removeAttribute('id');
                            domUtils.removeClasses(loader, 'loadingclass');
                        }