Hi,

Yes, the API is

//Fires when upload is stopped and not do postback
function CuteWebUI_AjaxUploader_OnStop()
{
    var hidden=this;
    hidden.internalobject.insertBtn.style.display=''
}

And you can refer to all API at http://www.ajaxuploader.com/document/scr/html/JavaScript-API.htm

Regards,

Ken