Code

ContainerNode.prototype.resizeToFitChildren = function (allowShrink, margin)
{
	var rect = this.getContentBounds(true);
	if (!rect)
		return;

	if (margin === undefined)
		margin = this.margin;

	rect = rect.inflate(margin);
	rect.y -= this.captionHeight;
	rect.height += this.captionHeight;
	if (!allowShrink)
		rect = rect.union(this.bounds);
	//if (rect.y < this.bounds.y)
	if (rect.y < this.parent.bounds.y)
	{
		//var dy = this.bounds.y - rect.y;
		//rect.y = this.bounds.y;
		var dy = this.parent.bounds.y - rect.y;
		rect.y = this.parent.bounds.y;
		rect.height -= dy;
	}
	this.setBoundsWithRules(rect, MindFusion.Diagramming.DiagramMediator.LinkRules);

	if (this.container)
		this.container.onChildModified(this, 0);
};