n = Math.floor(Math.random()*10%4);
k = Array(
"<object width='320' height='265'><param name='movie' value='http://www.youtube.com/v/GcNQ-h-0bj0&hl=ja_JP&fs=1&rel=0&color1=0x006699&color2=0x54abd6'></param><param name='allowFullScreen' value='true'></param><param name='allowscriptaccess' value='always'></param><embed src='http://www.youtube.com/v/GcNQ-h-0bj0&hl=ja_JP&fs=1&rel=0&color1=0x006699&color2=0x54abd6' type='application/x-shockwave-flash' allowscriptaccess='always' allowfullscreen='true' width='320' height='265'></embed></object>",
"<object width='320' height='265'><param name='movie' value='http://www.youtube.com/v/IVKnlmjXVyU&hl=ja_JP&fs=1&rel=0&color1=0x006699&color2=0x54abd6'></param><param name='allowFullScreen' value='true'></param><param name='allowscriptaccess' value='always'></param><embed src='http://www.youtube.com/v/IVKnlmjXVyU&hl=ja_JP&fs=1&rel=0&color1=0x006699&color2=0x54abd6' type='application/x-shockwave-flash' allowscriptaccess='always' allowfullscreen='true' width='320' height='265'></embed></object>",
"<object width='320' height='265'><param name='movie' value='http://www.youtube.com/v/HQNhbu6hvWg&hl=ja_JP&fs=1&rel=0&color1=0x006699&color2=0x54abd6'></param><param name='allowFullScreen' value='true'></param><param name='allowscriptaccess' value='always'></param><embed src='http://www.youtube.com/v/HQNhbu6hvWg&hl=ja_JP&fs=1&rel=0&color1=0x006699&color2=0x54abd6' type='application/x-shockwave-flash' allowscriptaccess='always' allowfullscreen='true' width='320' height='265'></embed></object>",
"<object width='320' height='265'><param name='movie' value='http://www.youtube.com/v/MWFFlDIvzzY&hl=ja_JP&fs=1&rel=0&color1=0x006699&color2=0x54abd6'></param><param name='allowFullScreen' value='true'></param><param name='allowscriptaccess' value='always'></param><embed src='http://www.youtube.com/v/MWFFlDIvzzY&hl=ja_JP&fs=1&rel=0&color1=0x006699&color2=0x54abd6' type='application/x-shockwave-flash' allowscriptaccess='always' allowfullscreen='true' width='320' height='265'></embed></object>"
);
document.write(k[n]);