function changeDescription(desc) {
		document.getElementById("photo1").style.display = "none";
		document.getElementById("photo2").style.display = "none";
		document.getElementById("photo3").style.display = "none";
		document.getElementById("photo4").style.display = "none";
		document.getElementById("photo5").style.display = "none";
		document.getElementById("photo6").style.display = "none";
		document.getElementById("photo7").style.display = "none";
		document.getElementById(desc).style.display = "block";
}