var no=Math.round(Math.random()*99)+1;
if (no<=10){
document.write("<iframe width=121 frameborder=0 border=0 scrolling=no height=67 src=http://www.dangdang.com/league/link/showlink.asp?type=dangdang&id=1&userid=P-1023831></iframe>");
}else if (no<=20){
document.write("<iframe width=120 frameborder=0 border=0 scrolling=no height=90 src=http://www.dangdang.com/league/link/showlink.asp?type=dangdang&id=15&userid=P-1023831></iframe>");
}else if (no<=30){
document.write("<iframe width=125 frameborder=0 border=0 scrolling=no height=125 src=http://www.dangdang.com/league/link/showlink.asp?type=dangdang&id=38&userid=P-1023831></iframe>");
}else if (no<=40){
document.write("<iframe width=120 frameborder=0 border=0 scrolling=no height=90 src=http://www.dangdang.com/league/link/showlink.asp?type=game&id=5&userid=P-1023831></iframe>");
}else if (no<=50){
document.write("<iframe width=120 frameborder=0 border=0 scrolling=no height=90 src=http://www.dangdang.com/league/link/showlink.asp?type=cool&id=3&userid=P-1023831></iframe>");
}else if (no<=60){
document.write("<iframe width=120 frameborder=0 border=0 scrolling=no height=60 src=http://www.dangdang.com/league/link/showlink.asp?type=book&id=7&userid=P-1023831></iframe>");
}else if (no<=70){
document.write("<iframe width=120 frameborder=0 border=0 scrolling=no height=90 src=http://www.dangdang.com/league/link/showlink.asp?type=soft&id=7&userid=P-1023831></iframe>");
}else if (no<=80){
document.write("<iframe width=120 frameborder=0 border=0 scrolling=no height=60 src=http://www.dangdang.com/league/link/showlink.asp?type=book&id=8&userid=P-1023831></iframe>");
}else if (no<=90){
document.write("<iframe width=120 frameborder=0 border=0 scrolling=no height=90 src=http://www.dangdang.com/league/link/showlink.asp?type=book&id=13&userid=P-1023831></iframe>");
}else{
document.write("<iframe width=120 frameborder=0 border=0 scrolling=no height=90 src=http://www.dangdang.com/league/link/showlink.asp?type=music&id=18&userid=P-1023831></iframe>");
}