<!--微博输入窗-->
<div class="Wei_box">
<textarea  class="Weitext_un" name="twi_content" id="twi_content"  onfocus="wordsCheckStart('my');" style="font-size:14px;">#说说你到现在一共暗恋过几个女生/男生？#</textarea>
<input type="hidden" value="1" id="twitter_type">
<input type="hidden" id="resourc_url" value="">
<input type="hidden" id="page_name" value="my">
<ul>
    <li class="a1"><a class="Wei_face IE6png checkLogin"id="smileFace" href="javascript:void(0);">表情</a></li>
    <li class="a1"><a class="Wei_pic IE6png checkLogin" id="img_div" href="javascript:void(0);">图片</a></li>
    <li class="a2">
        <span><span id="leftContentNum">0</span>/140</span>  
      <a href="javascript:void(0)" class="Wei_send checkLogin"id="sendtwitter" >发表</a>
        </li>
                        
</ul></div>

求详细解释。。。谢谢
   小弟真心菜

<!--提示内容-->
 
<!--bottom结束-->
<script type="text/javascript" src="/scripts/core.js?20120615"></script>
<script type="text/javascript" src="/scripts/my.js"></script>
<script type="text/javascript" src="/scripts/photoUpload.js"></script>
<script>
var de_twitter_content = '#说说你到现在一共暗恋过几个女生/男生？#';
$('.ad_zhongxia').bind({
    mouseover:function(){$(this).children(".TG_enter").show();},
    mouseout:function(){$(this).children(".TG_enter").hide();}
});
$('.checkin_but').bind({
    mouseover:function(){$(this).addClass("Click_day_on"); },
    mouseout:function(){$(this).toggleClass("Click_day_on");}
});
var is_chhhh = true;
$('.Wei_box').live('click',function(){
    if($('#twi_content').val()==de_twitter_content){
        $('#twi_content').removeAttr("class").addClass('Weitext_on');  
        if(is_chhhh){$('#twi_content').select();is_chhhh=false;}
    }
 });
$('.Wei_box').live('blur',function(){
    is_chhhh=true;
    if($('#twi_content').val()==de_twitter_content)$('#twi_content').removeAttr("class").addClass('Weitext_un');
    else if($('#twi_content').val()==''){ $('#twi_content').removeAttr("class").addClass('Weitext_un');
        $('#twi_content').val(de_twitter_content);}
 });
$('span.twitter_content').each(function (index, domEle) {
    $(this).html(bbeng.($(this).html()));
});
$('#sendtwitter').live('click',function(){
    if($('#twi_content').val()==de_twitter_content){
        $('#twi_content').removeAttr("class").addClass('Weitext_on');  
        $('#twi_content').select();
        bbeng.('请输入内容');
        return false;   
    }
    addTwitter('my','3341e3846cf4afabd9e91dd4086f6281');return false;
 });
$(document).ready(function(){

看到这我就晕了