function init() {
  document.getElementById('pl1').style.display = "none";
  document.getElementById('pl2').style.display = "none";
}

function polaroid(id, src) {
  var b = document.getElementById(id);
	b.style.backgroundImage = "url('" + src + "')";
}

function link_click(id) {
  document.getElementById(id).click();
}