function toggle(target, src) {
	target = document.getElementById(target);
	target.style.display = (target.style.display != 'block' ? 'block':'');
	src = document.getElementById(src);
	src.style.backgroundImage = (target.style.display != 'block' ? 'url(/elements/images/messaging/expand.gif)':'url(/elements/images/messaging/collapse.gif)')
}