$(document).ready(function(){
  $holder = $('#portfolio');
  for(i=2;i<=5;++i){
    $holder.append('<div><img src="/images/visual-'+i+'.jpg" /></div>');
  }
  $holder.innerfade({
    speed: 4000,
    timeout: 9000,
    type: 'random',
    containerheight: '270px'
  });
});