为什么一保存文章就乱码啊！

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<p align="center">
<object type="application/x-shockwave-flash"
 data="vcastr3.swf?xml=<vcastr>
 <channel>
  <item>
   <source>http://v48.mvideo.baidu.com/video/0f7ec859f8ef9e2c5bef0500</source>
   <duration></duration>
   <title></title>
  </item>
 </channel>
 </vcastr>"
 width="440" height="330" id="vcastr3">
 <param name="movie" value="vcastr3.swf?xml=<vcastr>
 <channel>
  <item>
   <source>http://v48.mvideo.baidu.com/video/0f7ec859f8ef9e2c5bef0500</source>
   <duration></duration>
   <title></title>
  </item>
 </channel>
            <plugIns>
                     <logoPlugIn>
                        <url>LogoPlugIn.swf</url>
                        <logoText>leent.cn</logoText>
                        <logoTextAlpha>0.75</logoTextAlpha>
                        <logoTextFontSize>24</logoTextFontSize>  
                        <logoTextColor>0xffffff</logoTextColor>
                        <textMargin>auto 25 25 auto</textMargin>
                        <logoClipUrl>/flv/logo.png</logoClipUrl>
                        <logoClipAlpha>1</logoClipAlpha>
                        <clipMargin>10 auto auto 30</clipMargin>
                </logoPlugIn>
                <javaScriptPlugIn>
                        <url>javaScriptPlugIn.swf</url>
                </javaScriptPlugIn>
        </plugIns>
 </vcastr>" />
 <param name="allowFullScreen" value="true" />
</object>

直接在文章里插入源代码就会出错。