发一个蛋疼的状态(你说我改个小东西github也要发个新鲜事，好蛋疼啊？？)

dt_status.js

//用这个在人人发状态, 可以做到........ 让你的最近一条状态为'什么也没做...'
//支持renren新旧版本.
//呵呵

(function(document){
    var h_iframes = document.getElementsByTagName('iframe');
    var proxy;
    var id;
    var patten = /status/g;
    var text = document.getElementsByClassName('status-content')[0].value;
    for(var i = 0; i < h_iframes.length; ++i){
        var src = h_iframes[i].getAttribute('src');
        if(patten.test(src)){
            proxy = h_iframes[i];
        }
    }
    function sendStatu(msg,callback){
        var xhr = proxy.contentWindow.getTransport();
        var sendMsg = encodeURIComponent(msg);
        xhr.onreadystatechange = function(event){
            if(xhr.readyState == 4){
                if((xhr.status >=200 && xhr.status < 300) || xhr.status == 304){
                    var response = XN.JSON.parse(xhr.responseText);
                    id = response.updateStatusId;
                    callback && callback();
                }else{
                    console.log(xhr.status, xhr.statusText);
                }
            }
        };
        xhr.open('post', 'http://status.renren.com/doing/update.do?');
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
        xhr.send('c='+sendMsg+'&raw='+sendMsg+'&&publisher_form_ticket='+XN.get_check+'&requestToken='+XN.get_check+'&_rtk='+XN.get_check_x);
    }
    function deleteStatu(callback){
        var xhr = proxy.contentWindow.getTransport();
        xhr.open('post', 'http://status.renren.com/doing/deleteDoing.do?');
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
        xhr.onreadystatechange = function(event){
            if(xhr.readyState == 4){
                if((xhr.status >=200 && xhr.status < 300) || xhr.status == 304){
                    callback && callback();
                }else{
                    console.log(xhr.status, xhr.statusText);
                }
            }
        };
        xhr.send('id='+id+'&requestToken='+XN.get_check+'&_rtk='+XN.get_check_x);
    }
    sendStatu(text,setTimeout(function(){
        sendStatu(';)', function(){deleteStatu(function(){window.location.reload()})});
    },2*1000));
}(document));

命名有长度限制么？为什么都是 Statu ……

刚学js的时候写的。。。代码风格好烂。。。