function doDrone(n, a)
{
  var drone = document.getElementById('d');
  drone.innerHTML =
                   "<form action=\"\" id=\"droneForm\" method=\"POST\">" +
                   "<input type=\"hidden\" name=\""+n+"\" value=\""+a+"\" />" +
                   "</form>";
  document.getElementById('droneForm').submit();
}

function login()
{
  doDrone("drone","li");
  return false;
}

function logout()
{
  doDrone("drone","lo");
  return false;
}

function cart_add(id) {
  doDrone("a", id);
  return false;
}

function cart_remove(id) {
	doDrone("r", id);
	return false;
}

function hide_detail() {
	var target = document.getElementById("portfolio_detail_img");
	target.className = "hideDetail";
}

function show_detail() {
	var target = document.getElementById("portfolio_detail_img");
  target.className = "showDetail";
}