// JavaScript Document
function toggle(id) {
	var tr = document.getElementById(id);
	
	if (tr == null) {
		return;
	}
	
	var bExpand = tr.style.display == '';
	tr.style.display = (bExpand ? 'none' : '');
	
	var img = document.getElementById('img'+id);
	
	if (img != null) {
		if (!bExpand) img.src = '../images/minus.gif';
		else img.src = '../images/plus.gif';
	}
}