function switchImage(newimage,theli){
	current = document.getElementById('theimage').src;
	if(current.indexOf(newimage) == -1) {
		for (i=1; i<7; i++) {
			if (document.getElementById("img" + i) != null) {
				if(document.getElementById("img" + i).className == "on") {
					document.getElementById("img" + i).className = "off";
				} else if(('img' + i) == theli) {
					document.getElementById("img" + i).className = "on";
				}
			}
		}
		newsrc = '/images/' + newimage;
		document.getElementById('theimage').src = newsrc;
	}
}