function on(myimg,ext){
	document.images[myimg].src = '/images/'+myimg+'_on.'+ext;
}
function off(myimg,ext){
	document.images[myimg].src = '/images/'+myimg+'_off.'+ext;
}

function toggle(toggleId, e) {
	if (!e) {
		e = window.event;
	}
	if (!document.getElementById) {
		return false;
	}
	var body = document.getElementById(toggleId);
	if (!body) {
		return false;
	} 
	var im = toggleId + "_toggle";
	if (body.style.display == 'none') {
		body.style.display = 'block';
		if (document.images[im]) {
			document.images[im].src = "/images/bu_less.gif";
		}
	}
	else {
		body.style.display = 'none';
		if (document.images[im]) {
			document.images[im].src = "/images/bu_more.gif";
		}
	}
	if (e) {
		e.cancelBubble = true;
		if (e.stopPropagation) {
			e.stopPropagation();
		}
	}
}