booksarr=new Array('059600110X','0793148782','1401302378','0500203768','1854373455','0738208612','1843400103','1581150873','0817455124','0969983441','1582971765','158297215X','0060520841','0262540657','0375714499','1583225366','1893956393','0679758569','159059858X','0470097744','0470097760','0071496270','1591841380','0470045841','193359621X','0470050861','143030698X','1597720208','1600371523','0973626585','0470050519','1932394796','0782142737','0764536672','0764537601','0596006551','0415223776','0262632551','026258266X','0874215757','0262232278','0500203784','0471443417','0542273349','0542176491','0387243569','0470857536','0789024403','0596008813','0321426223','1904811574','0596003838','0764579169','0764588486','0130353337','0750678712','1591394236','1587623684','1583226796','1583671056','0954432762','007327898X','0495050261','0340884991','0205449727','0205477534','1555420516','0735711704','0793145171','0782140181','0471085863','0764597787','0789735741','0596100663','1932394494','1564968596','1581801467','1592531857','0823058581','0471783234','159253158X','027365604X','0240808223','0750663170','071367704X','0321344758','1884956653','0470113456','0470124172','1419584359','1419596063','1419593331','0910965595','0910965684','0910965668','0910965641','0538726849','0130888524','0764597582','1573872687','0321122461','0240805984','0240808312','1928915590','047002268X','0240809548','B000VI72YI','B000FSIMHU','097362650X','0977893847','0634090542','0876390076','0879308443','0743293185','0876390599','0823084337','1598695037','3836425440','B000FI73MA','B000X0KQ0G','B000WPXQ2M','B000WP2RC2','0465005640','038541580X','0486296725','');

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>')}

}