function tipp(n)
{
  var n;

  var Anzahl = 17;

  var isbn = new Array();
  isbn[0] = "";
  isbn[1] = "3939937126"; 
  isbn[2] = "3939937045";
  isbn[3] = "3939937088";
  isbn[4] = "3980933636";
  isbn[5] = "3939937053";
  isbn[6] = "3980933652";
  isbn[7] = "3980933660";
  isbn[8] = "3939937061";
  isbn[9] = "3980933687";
  isbn[10] = "393993707x";
  isbn[11] = "3939937002"; 
  isbn[12] = "3939937010";
  isbn[13] = "3939937029";
  isbn[14] = "3939937037";   
  isbn[15] = "3939937096";  
  isbn[16] = "393993710x";    
  isbn[17] = "3939937118";  

    
for (i=1; i < Anzahl+1; i++)
  { Zufallszahl = Math.round(Math.random() * (Anzahl  - i) ) + 1;
    X = isbn[Anzahl + 1 -i];
    isbn[Anzahl + 1 -i] = isbn[Zufallszahl];
    isbn[Zufallszahl] = X;  
  }


for (i=1; i < n + 1; i++)
  {  text  = '<a href="http://www.amazon.de/exec/obidos/ASIN/' + isbn[i] + '/liesmalwieder-21">';
     text += '<img src="../coverpics/' + isbn[i] + '.jpg" alt="" border="0"></a> ';
     document.write(text);
}

}