function pic(x)
{
	photo1 = document.getElementById("pic1");
	photo2 = document.getElementById("pic2");
	if (x==1)
	{
		photo1.style.display="block";
		photo2.style.display="none";
	}
	if (x==2)
	{
		photo2.style.display="block";
		photo1.style.display="none";
	}
}