function onLoad()
{
	plustop = new Image();
	plustop.src = "/images/tree/plustop.gif";
	minustop = new Image();
	minustop.src = "/images/tree/minustop.gif";

	plusbottom = new Image();
	plusbottom.src = "/images/tree/plusbottom.gif";
	minusbottom = new Image();
	minusbottom.src = "/images/tree/minusbottom.gif";

	plus = new Image();
	plus.src = "/images/tree/plus.gif";
	minus = new Image();
	minus.src = "/images/tree/minus.gif";
}

function toggle(id, pos) {
	e = document.getElementById(id);
	i = document.getElementById(id + 'img')
	if (e.style.display == 'none') {
		e.style.display = 'inline';
		i.src = eval('minus' + pos + '.src');
	}
	else {
		e.style.display = 'none';
		i.src = eval('plus' + pos + '.src');
	}
	return false;
}

function setParentId(id) {
	if (window.opener && !window.opener.closed) {
	  e = window.opener.document.getElementById('code_parent');
	  e.value = id;
	  this.close();
	}
	return false;
}

window.onload = onLoad;