这段代码可以去掉iqiyi的广告，请问原理是什么呢？

代码如下：

<object align="middle" width="100%" height="100%" viewastext="" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" id="_moveid1397009475126">
<param value="always" name="allowScriptAccess">
<param name="isDependent" value="48">
<param value="&vid=0a71dffd8d92a3f19a0676dcc89304d7&tvId=235266800&menu=false&autoplay=true&adurl==undefined" name="flashvars">
<param value="true" name="allowFullScreen">
<param value="all" name="allownetworking">
<param value="http://www.iqiyi.com/player/20131231115324/Player.swf" name="movie">
<param value="showall" name="Scale">
<param value="high" name="quality">
<param value="true" name="play">
<param value="#000000" name="bgcolor">
<param value="Opaque" name="wmode">
<embed align="middle" width="100%" height="100%" name="_moveid1397009475126" scale="showall" play="true" allowfullscreen="true" allowscriptaccess="always" bgcolor="#000000" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" isdependent="48" wmode="Opaque" quality="high" src="http://www.iqiyi.com/player/20131231115324/Player.swf" flashvars="&vid=0a71dffd8d92a3f19a0676dcc89304d7&tvId=235266800&menu=false&autoplay=true&adurl==undefined" allownetworking="all">
</object>