Note that the a serious bug with all the vision of FCKeditor

I have edited the editor\css\fck_editorarea.css:

p.img{ text-align:center; padding:24px 0 10px;  margin:0; text-indent:0;}
p.img img{ display:block; margin:0 auto 4px; }
p.img span{ font-size:12px; text-align:center; padding-top:4px; line-height:20px; color:#5d5d5d;}

p.img1{float:left;text-align:center; padding:20px 15px 10px 0;  margin:0; text-indent:0;}
p.img1 span{display:block; font-size:12px; color:#5d5d5d;padding-top:8px;}

Add above code to it.
Iinsert a picture into the editor,
then edit the "ImageProperties" by Right-mouse menu,when the dialog windows display,
there is nothing ,
any input box is empty inside.
It looks like "dialog.Selection.GetSelectedElement() " get nothing.
I am very sorry,my English is very poor,I am Chinaese.I would like to resolve this issue.Who can help me? How should I do?
The source code of the editor is:

<p class="img1" flag="1"><a target="_blank" href="http://pic.titan24.com/photo?id=100323"><img id="100323" title="点击查看视界大图" height="404" alt="在此输入图注666" width="550" align="middle" src="http://img2008.titan24.com/imgwater/100000/100323.jpg" /></a><span>在此输入图注666　<a target="_blank" href="http://pic.titan24.com/photo?id=100323&amp;album">查看图集</a></span></p>

(首先我把上面的一段css样式加进了editor\css\fck_editorarea.css，目的是使排版更方便。但是当我插入一张图片到编辑器的时候，这张图片由于受到css的控制，再加上我修改了一些js文件，生成的代码如上。这时候我在编辑器点击右键，编辑图片属性，可是弹出的图片属性对话框里面是空的，好像此时无法选中这种图片，dialog.Selection.GetSelectedElement得不到任何东西。这很奇怪，可是我很想解决这个问题，这对我很重要。谁能帮我看看怎么办才好呢?不好意思，我是中国人，英语不是很好，下面截图两张。)