function writeYouTube(swfile)
{
   var str='<object width="425" height="355"><param name="movie" value="'+swfile+'"></param><param name="wmode" value="transparent"></param><embed src="'+swfile+'" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>';
   document.writeln(str);
}