function randomAdv() {
  m = 0, x = 0, y = 0;
  ad  = new Array();
  adv = new Array();
  hit = new Array();

  hit[0] = 1; adv[0] = '<img src="http://www.chee.cc/mono/img/pro.gif" height="13" width="70"><br><a href="http://www.fujisan.co.jp/Product/1281682315/ap-chee/" target="_blank"><img src="http://www.fujisan.co.jp/images/products/1281682315_s.jpg" border="1" alt="かぞくのじかん"></a>';
  hit[1] = 1; adv[1] = '<img src="http://www.chee.cc/mono/img/prt.gif" height="13" width="70"><br><a href="http://www.fujisan.co.jp/Product/1281683732/ap-chee/" target="_blank"><img src="http://www.fujisan.co.jp/images/products/1281683732_s.jpg" border="1" alt="ことものとも"></a>';
  hit[2] = 2; adv[2] = '<a href="http://www.accesstrade.net/at/c.html?rk=01002ldl000vm6" target="_blank"><img src="http://www.accesstrade.net/at/r.html?rk=01002ldl000vm6" alt="" border="0" /></a>';
  hit[3] = 1; adv[3] = '<iframe frameborder="0" allowtransparency="true" height="60" width="234" marginheight="0" scrolling="no" src="http://ad.jp.ap.valuecommerce.com/servlet/htmlbanner?sid=2128510&pid=879386072" marginwidth="0"><script language="javascript" src="http://ad.jp.ap.valuecommerce.com/servlet/jsbanner?sid=2128510&pid=879386072"></script><noscript><a href="http://ck.jp.ap.valuecommerce.com/servlet/referral?sid=2128510&pid=879386072" target="_blank" ><img src="http://ad.jp.ap.valuecommerce.com/servlet/gifbanner?sid=2128510&pid=879386072" height="60" width="234" border="0"></a></noscript></iframe>';
  hit[4] = 1; adv[4] = '<iframe frameborder="0" allowtransparency="true" height="60" width="100" marginheight="0" scrolling="no" src="http://ad.jp.ap.valuecommerce.com/servlet/htmlbanner?sid=2128510&pid=878435644" marginwidth="0"><script language="javascript" src="http://ad.jp.ap.valuecommerce.com/servlet/jsbanner?sid=2128510&pid=878435644"></script><noscript><a href="http://ck.jp.ap.valuecommerce.com/servlet/referral?sid=2128510&pid=878435644" target="_blank" ><img src="http://ad.jp.ap.valuecommerce.com/servlet/gifbanner?sid=2128510&pid=878435644" height="60" width="100" border="0"></a></noscript></iframe>';
  hit[5] = 1; adv[5] = '<IFRAME frameBorder="0" allowTransparency="true" height="60" width="120" marginHeight="0" scrolling="no" src="http://ad.jp.ap.valuecommerce.com/servlet/htmlbanner?sid=2128510&pid=876328652" MarginWidth="0"><script Language="javascript" Src="http://ad.jp.ap.valuecommerce.com/servlet/jsbanner?sid=2128510&pid=876328652"></script><noscript><a Href="http://ck.jp.ap.valuecommerce.com/servlet/referral?sid=2128510&pid=876328652" target="_blank" ><img Src="http://ad.jp.ap.valuecommerce.com/servlet/gifbanner?sid=2128510&pid=876328652" height="60" width="120" Border="0"></a></noscript></IFRAME>';
  hit[6] = 1; adv[6] = '<iframe frameborder="0" allowtransparency="true" height="100" width="100" marginheight="0" scrolling="no" src="http://ad.jp.ap.valuecommerce.com/servlet/htmlbanner?sid=2128510&pid=879174439" marginwidth="0"><script language="javascript" src="http://ad.jp.ap.valuecommerce.com/servlet/jsbanner?sid=2128510&pid=879174439"></script><noscript><a href="http://ck.jp.ap.valuecommerce.com/servlet/referral?sid=2128510&pid=879174439" target="_blank" ><img src="http://ad.jp.ap.valuecommerce.com/servlet/gifbanner?sid=2128510&pid=879174439" height="100" width="100" border="0"></a></noscript></iframe>';
  hit[7] = 1; adv[7] = '<IFRAME frameBorder="0" allowTransparency="true" height="125" width="125" marginHeight="0" scrolling="no" src="http://ad.jp.ap.valuecommerce.com/servlet/htmlbanner?sid=2128510&pid=877388104" MarginWidth="0"><script Language="javascript" Src="http://ad.jp.ap.valuecommerce.com/servlet/jsbanner?sid=2128510&pid=877388104"></script><noscript><a Href="http://ck.jp.ap.valuecommerce.com/servlet/referral?sid=2128510&pid=877388104" target="_blank" ><img Src="http://ad.jp.ap.valuecommerce.com/servlet/gifbanner?sid=2128510&pid=877388104" height="125" width="125" Border="0"></a></noscript></IFRAME>';
  hit[8] = 1; adv[8] = '<iframe frameborder="0" allowtransparency="true" height="95" width="95" marginheight="0" scrolling="no" src="http://ad.jp.ap.valuecommerce.com/servlet/htmlbanner?sid=2128510&pid=878714584" marginwidth="0"><script language="javascript" src="http://ad.jp.ap.valuecommerce.com/servlet/jsbanner?sid=2128510&pid=878714584"></script><noscript><a href="http://ck.jp.ap.valuecommerce.com/servlet/referral?sid=2128510&pid=878714584" target="_blank" ><img src="http://ad.jp.ap.valuecommerce.com/servlet/gifbanner?sid=2128510&pid=878714584" height="95" width="95" border="0"></a></noscript></iframe>';
  hit[9] = 1; adv[9] = '<script type="text/javascript" src="http://rot5.a8.net/jsa/a5e3b779d34aa8e251c0c6e772a4c121/568628e0d993b1973adc718237da6e93.js"></script>';
  hit[10] = 1; adv[10] = '<script type="text/javascript" src="http://rot7.a8.net/jsa/a5e3b779d34aa8e251c0c6e772a4c121/9e94b15ed312fa42232fd87a55db0d39.js"></script>';
  hit[11] = 1; adv[11] = '<script type="text/javascript" src="http://rot8.a8.net/jsa/a5e3b779d34aa8e251c0c6e772a4c121/a13ee062eff9d7295bfc800a11f33704.js"></script>';
  hit[12] = 1; adv[12] = '<script type="text/javascript" src="http://rot3.a8.net/jsa/a5e3b779d34aa8e251c0c6e772a4c121/dc5e819e186f11ef3f59e6c7d6830c35.js"></script>';
  hit[13] = 1; adv[13] = '<script type="text/javascript" src="http://rot1.a8.net/jsa/a5e3b779d34aa8e251c0c6e772a4c121/e88a49bccde359f0cabb40db83ba6080.js"></script>';
  hit[14] = 1; adv[14] = '<a href="http://px.a8.net/svt/ejp?a8mat=105HGX+1JDC1E+348+U4J7L" target="_blank"><img border="0" width="46" height="46" alt="" src="http://www27.a8.net/svt/bgt?aid=060722097093&wid=001&eno=01&mid=s00000000404005060000&mc=1"></a><img border="0" width="1" height="1" src="http://www16.a8.net/0.gif?a8mat=105HGX+1JDC1E+348+U4J7L" alt="">';
  hit[15] = 1; adv[15] = '<a href="http://px.a8.net/svt/ejp?a8mat=1C4BOL+3HMHF6+348+1NJK7L" target="_blank"><img border="0" width="160" height="59" alt="" src="http://www28.a8.net/svt/bgt?aid=080823333211&wid=001&eno=01&mid=s00000000404010001000&mc=1"></a><img border="0" width="1" height="1" src="http://www11.a8.net/0.gif?a8mat=1C4BOL+3HMHF6+348+1NJK7L" alt="">';
  hit[16] = 1; adv[16] = '<table border="0" cellpadding="0" cellspacing="2"><tr><td align="center"><img src="http://www.chee.cc/petit/l.gif" height="10" width="11"><br><a href="http://hb.afl.rakuten.co.jp/hsc/0b7c57e1.1157f37b.0b7c57e2.d4784655/" target="_blank">4senses interior<br><b>scope</b><br>version.R</a></td></tr></table>';
  hit[17] = 1; adv[17] = '<img src="http://www.chee.cc/petit/s.gif" height="12" width="13"><span class="sml"><a href="http://px.a8.net/svt/ejp?a8mat=1I4XC1+DXB04Y+1YJG+614CY" target="_blank">北欧のヴィンテージ食器</a><img border="0" width="1" height="1" src="http://www17.a8.net/0.gif?a8mat=1I4XC1+DXB04Y+1YJG+614CY" alt=""></span><br><a href="http://px.a8.net/svt/ejp?a8mat=1I4XC1+DXB04Y+1YJG+639IP" target="_blank"><img border="0" width="224" height="33" alt="" src="http://www23.a8.net/svt/bgt?aid=090929089842&wid=001&eno=01&mid=s00000009142001023000&mc=1"></a><img border="0" width="1" height="1" src="http://www17.a8.net/0.gif?a8mat=1I4XC1+DXB04Y+1YJG+639IP" alt="">';
  hit[18] = 1; adv[18] = '<a href="http://px.a8.net/svt/ejp?a8mat=101CBD+CRMNSI+348+O5CAP" target="_blank"><img border="0" width="100" height="100" alt="" src="http://www26.a8.net/svt/bgt?aid=060528793772&wid=001&eno=01&mid=s00000000404004056000&mc=1"></a><img border="0" width="1" height="1" src="http://www13.a8.net/0.gif?a8mat=101CBD+CRMNSI+348+O5CAP" alt="">';
  hit[19] = 1; adv[19] = '<table border="0" bgcolor="F3F3F3" cellpadding="0" cellspacing="5"><tr><td align="center"><img src="http://www.chee.cc/petit/c.gif" height="13" width="14">写真日記をはじめたら、<br>写真を撮るのがもっと楽しくなった。<br>- <a href="http://px.a8.net/svt/ejp?a8mat=101CBD+CRMNSI+348+O675U" target="_blank"><b>プチ・ホームページサービス</b></a> -<img border="0" width="1" height="1" src="http://www12.a8.net/0.gif?a8mat=101CBD+CRMNSI+348+O675U" alt=""></td></tr></table>';

  for(i=0; i<=hit.length - 1; i++) {
    m += hit[i];
  }
  n = Math.floor(Math.random() * m);
  n++;
  for(i=0; i<=hit.length - 1; i++) {
    x = y;
    y += hit[i];
    if(x<n && n<=y) ad = adv[i];
  }
  document.write(ad);
}
