Random Password Function - Javascript

Script generate random passwords.

function randomPassword(length)
{
   chars = '01234568789qwertzuiopasdfghjklyxcvbnmQWERTZUIOPASDFGHJKLYXCVBNM';
   pass = '';
   for(i=0;i<length;i++)
   {
      j = Math.floor(Math.random()*64);
      pass += chars.charAt(j);
   }
   return pass;
}