var photos0 = new Array(4);
		photos0[0] = "images/thumbs/imageBlock0.jpg";
		photos0[1] = "images/thumbs/imageBlock1.jpg";
		photos0[2] = "images/thumbs/imageBlock2.jpg";
		photos0[3] = "images/thumbs/imageBlock3.jpg";
		
		var photos1 = new Array(4);
		photos1[0] = "images/thumbs/imageBlock4.jpg";
		photos1[1] = "images/thumbs/imageBlock5.jpg";
		photos1[2] = "images/thumbs/imageBlock6.jpg";
		photos1[3] = "images/thumbs/imageBlock7.jpg";
		
		var photos2 = new Array(4);
		photos2[0] = "images/thumbs/imageBlock8.jpg";
		photos2[1] = "images/thumbs/imageBlock9.jpg";
		photos2[2] = "images/thumbs/imageBlock10.jpg";
		photos2[3] = "images/thumbs/imageBlock11.jpg";
		
		var photos3 = new Array(4);
		photos3[0] = "images/thumbs/imageBlock12.jpg";
		photos3[1] = "images/thumbs/imageBlock13.jpg";
		photos3[2] = "images/thumbs/imageBlock14.jpg";
		photos3[3] = "images/thumbs/imageBlock15.jpg";

		var curPhoto = 0;
		var direction;
		var begin;


		function change() {
			if (curPhoto == 3) {
				curPhoto = 0;
			}
			else {
				++ curPhoto;
			}
			document.getElementById("imageBlock0").src = photos0[curPhoto];
			document.getElementById("imageBlock1").src = photos1[curPhoto];
			document.getElementById("imageBlock2").src = photos2[curPhoto];
			document.getElementById("imageBlock3").src = photos3[curPhoto];
			if (curPhoto == 0) {
				direction = "up";
			}
			else if (curPhoto == 3) {
				direction = "down";
			}
			document.getElementById("imageBlock0").src = photos0[curPhoto];
			document.getElementById("imageBlock1").src = photos1[curPhoto];
			document.getElementById("imageBlock2").src = photos2[curPhoto];
			document.getElementById("imageBlock3").src = photos3[curPhoto];
		}
		function startChanging() {
			if (begin) {
				clearInterval(begin);
			}
			begin = setInterval("change()", 3000);
		}