var activePic = 1;

function spClick(number) {
	var smallPicBorder = document.getElementById('smallPicBorder_' + number);
	smallPicBorder.style.display = "block";

	var bigPic = document.getElementById('bigPic');
	bigPic.src = bigPics[number].src;

	var previousSmallPicBorder = document.getElementById('smallPicBorder_' + activePic);
	previousSmallPicBorder.style.display = "none";

	activePic = number;
}