function getElement(id) {
		if (window.navigator.userAgent.toLowerCase().match("gecko"))
			return(document.getElementById(id));
		else if (document.layers)
			return(document.layers[id]);
		else if (document.all)
			return(document.all[id]);
		else
			return(document.getElementById(id));
	}
	
	function openPicture() {
		var image = getElement("bigPic");
		image.style.visibility = "visible";
	}
	
	function closePicture() {
		var image = getElement("bigPic");
		image.style.visibility = "hidden";
	}