function minmaxParent(obj) {
	// obj.nextSibling.style.display = "none";
	// obj.firstChild.style.display = "block";
	obj = obj.nextSibling.nextSibling;
	
	if ((obj.style.display != "") & (obj.style.display != "none")) {
		obj.style.display = "none";
	} else {
		obj.style.display = "block"
	}
}