document.writeln("<script>");
document.writeln("var i=1; ");
document.writeln("var j=3; \/\/广告总数，至少两少");
document.writeln("");
document.writeln("");
document.writeln("var myobj = setInterval(\"adchange()\",3000);  \/\/这里调整你的轮换时间，默认3秒");
document.writeln("function adchange() ");
document.writeln("{ ");
document.writeln("  var k=1;");
document.writeln("  i=i+1;");
document.writeln("  for (k;k<=j;k++ )");
document.writeln("  {");
document.writeln("   if(k!=i)");
document.writeln("   {");
document.writeln("    document.getElementById(\"ad_\"+k).style.display=\'none\'; ");
document.writeln("   }");
document.writeln("   else");
document.writeln("   {");
document.writeln("    document.getElementById(\"ad_\"+i).style.display=\'block\'; ");
document.writeln("   }");
document.writeln("  }");
document.writeln("if(i==j) i=0;");
document.writeln("} ");
document.writeln("<\/script>");
document.writeln("<div id=\"ad_1\" style=\"display:block\"><a href=\"http:\/\/www.avavgirls.com\/\" target=\"_blank\"><img src=\"http:\/\/www.av-fans.com\/ad\/images\/avavgirls.gif\" border=\"0\"><\/a><\/div>");
document.writeln("<div id=\'ad_2\' style=\'display:none\'><a href=\"http:\/\/www.av-fans.com\/\" target=\"_blank\"><img src=\'http:\/\/www.av-fans.com\/ad\/images\/avfans.gif\' border=\"0\"><\/a><\/div>");
document.writeln("<div id=\'ad_3\' style=\'display:none\'><a href=\"http:\/\/www.avavgirls.com\/\" target=\"_blank\"><img src=\'http:\/\/www.av-fans.com\/ad\/images\/avavgirls.gif\' border=\"0\"><\/a><\/div>");
document.writeln("")