booksarr=new Array('0375503668','007135588X','0684855313','0072224614','0735614016','B00002S7F5','1887563482','0312319061','0596003838','0471432571','0596002637','0750674741','0750676086','0750675918','0764540475','0596000529','0195094891','0816042810','0816042802','0596009283','0764578146','0596004478','0764583786','0321303318','0596006551','0595273394','0871161974','0966517687','0060011637','0743203151','B00022PTI4','B0000E6NK9','B0006SAHBS','B00006JCD4','0521002230','0262232243','0878409998','0262531933','0631232427','184376413X','073571410X','0735713243','0735712026','186100074X','0596005814','1882114981','1565925823','0130476773','0674012925','0596001088','0471694665','0131429388','0130313580','0131828274','0201773449','0321267516','0596005024','1587050692','159059357X','0071412514','0071409785','1578203015','0767905210','0316346624','0767904338','0735616280','0201794837','076453971X','0735615152','0735612781','0863802796','0968211828','0854046054','0071359788','0750670061','0497089122','0321159985','1593270348','1584502800','0735622701','0789735172','0764577042','0470045906','0596528272','0735622655','0192862073','006251587X','0072517158','0596527349','0789736268','0131450913','1931490430','078214151X','0761527478','0789727560','0890069131','0071360654','047139470X','0764517937','1428808264','1582050503','1931490945','0954171101','1883884233','0596007485','0735614903','0471375454','1402026366','0792380274','0878300511','013145661X','0792357310','0262182149','0471444588','0814471749','0978915909','1576751929','1578516803','');

if(booksarr.length > 6){
function getRndImg() {
  var rnd = Math.round(Math.random()*(booksarr.length-1));
  return booksarr[rnd]
}
function makeArray() {
  var list = "";
  var arr = new Array();
  cnt = 0;
  while (cnt!=nofRandom) {
    var img = getRndImg();
    if (list.indexOf(img)==-1) {
      arr[cnt++]=img
      list+=img;
    }
  }
  return arr;
}
nofRandom = 6;


arr = makeArray();
for (i=0;i<arr.length;i++)
    {document.write('<iframe src="http://rcm.amazon.com/e/cm?t=masternewmedi&o=1&p=8&l=as1&asins=' + arr[i]+ '&fc1=000000&IS2=1&lt1=_blank&lc1=0000FF&bc1=000000&bg1=FFFFFF&f=ifr" style="width:120px;height:240px;" scrolling="no" marginwidth="0" marginheight="0" frameborder="0"></iframe><br><br>')}

}